diff --git a/.gitignore b/.gitignore
index 6d725d9b..7f520053 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,4 @@
 *.m~
+*.asv
+.DS_Store
+xcuserdata/
diff --git a/metal/mglMetalTest.m b/metal/mglMetalTest.m
index 58ee8dfd..afca3344 100644
--- a/metal/mglMetalTest.m
+++ b/metal/mglMetalTest.m
@@ -20,7 +20,7 @@
 
   mglSetParam('verbose',1);
   if runWithXcode
-    disp(sprintf('Startup mglMetal with XCode now...'))
+    fprintf('Startup mglMetal with XCode now...\n')
     mglMetalOpen(nan);
   else
     mglMetalOpen;
diff --git a/mgllib/mgl.h b/mgllib/mgl.h
index 7c99f9e7..6b01829e 100644
--- a/mgllib/mgl.h
+++ b/mgllib/mgl.h
@@ -242,7 +242,7 @@ void usageError(char *functionName)
 /////////////////////////
 void mglCreateGlobal(void)
 {
-  const int ndims[] = {1};
+  const mwSize ndims[] = {1};
   int nfields = 1;
   const char *field_names[] = {"version"};
      
diff --git a/mgllib/mglBindFrameBufferObject.mexmaci64 b/mgllib/mglBindFrameBufferObject.mexmaci64
index 2041dadb..fb5e6342 100755
Binary files a/mgllib/mglBindFrameBufferObject.mexmaci64 and b/mgllib/mglBindFrameBufferObject.mexmaci64 differ
diff --git a/mgllib/mglBindTexture.c b/mgllib/mglBindTexture.c
index 392cb60a..93b6e578 100644
--- a/mgllib/mglBindTexture.c
+++ b/mgllib/mglBindTexture.c
@@ -65,7 +65,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
     return;
   }
   // variables for dimensions of second input
-  const int *dims = mxGetDimensions(prhs[1]); // rows cols
+  const mwSize *dims = mxGetDimensions(prhs[1]); // rows cols
   const mwSize ndims = mxGetNumberOfDimensions(prhs[1]); 
 
   // allocate space for texture info
diff --git a/mgllib/mglBindTexture.mexmaci64 b/mgllib/mglBindTexture.mexmaci64
index d723a355..21c5c650 100755
Binary files a/mgllib/mglBindTexture.mexmaci64 and b/mgllib/mglBindTexture.mexmaci64 differ
diff --git a/mgllib/mglBltTexture.mexmaci64 b/mgllib/mglBltTexture.mexmaci64
index 8aa1ed73..9d29213a 100755
Binary files a/mgllib/mglBltTexture.mexmaci64 and b/mgllib/mglBltTexture.mexmaci64 differ
diff --git a/mgllib/mglCharToKeycode.c b/mgllib/mglCharToKeycode.c
index cd1166b8..a4f2b013 100644
--- a/mgllib/mglCharToKeycode.c
+++ b/mgllib/mglCharToKeycode.c
@@ -87,7 +87,7 @@ mxArray *charToKeycode(const mxArray *cellArrayOfChars, int returnAllMatches)
   // we need a cell array, otherwise we use a single array
   mxArray *keycodeArray;
   if (returnAllMatches)  {
-    const int dims[2] = {1,nkeys};
+    const mwSize dims[2] = {1,nkeys};
     keycodeArray = mxCreateCellArray(2,dims);
   }
   else
diff --git a/mgllib/mglCharToKeycode.mexmaci64 b/mgllib/mglCharToKeycode.mexmaci64
index 971cf002..eeb5088d 100755
Binary files a/mgllib/mglCharToKeycode.mexmaci64 and b/mgllib/mglCharToKeycode.mexmaci64 differ
diff --git a/mgllib/mglCreateFrameBufferObject.mexmaci64 b/mgllib/mglCreateFrameBufferObject.mexmaci64
index 7319b2b2..b60d3eda 100755
Binary files a/mgllib/mglCreateFrameBufferObject.mexmaci64 and b/mgllib/mglCreateFrameBufferObject.mexmaci64 differ
diff --git a/mgllib/mglDeepColorTest.c b/mgllib/mglDeepColorTest.c
index 5fc8c07d..f8cd90c4 100644
--- a/mgllib/mglDeepColorTest.c
+++ b/mgllib/mglDeepColorTest.c
@@ -57,7 +57,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
   }
 
   // variables for dimensions
-  const int *dims = mxGetDimensions(prhs[0]); // rows cols
+  const mwSize *dims = mxGetDimensions(prhs[0]); // rows cols
   const mwSize ndims = mxGetNumberOfDimensions(prhs[0]); 
   const size_t n = mxGetNumberOfElements(prhs[0]);
   int imageWidth, imageHeight;
diff --git a/mgllib/mglDeepColorTest.mexmaci64 b/mgllib/mglDeepColorTest.mexmaci64
index bb44064e..f89fa48d 100755
Binary files a/mgllib/mglDeepColorTest.mexmaci64 and b/mgllib/mglDeepColorTest.mexmaci64 differ
diff --git a/mgllib/mglDisplayCursor.mexmaci64 b/mgllib/mglDisplayCursor.mexmaci64
index 053f72d1..78c3b3bf 100755
Binary files a/mgllib/mglDisplayCursor.mexmaci64 and b/mgllib/mglDisplayCursor.mexmaci64 differ
diff --git a/mgllib/mglDrawImage.c b/mgllib/mglDrawImage.c
index 44f71a1d..efb26855 100644
--- a/mgllib/mglDrawImage.c
+++ b/mgllib/mglDrawImage.c
@@ -26,7 +26,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
 	int ri, gi, bi, ix, iy, inputM, inputN, pixelIndex = 0;
 	size_t numPoints;
 	double *inputMatrix, *centerPos;
-	const int *dims;
+	const mwSize *dims;
 	GLfloat *pixelData, rv, gv, bv, rasterX, rasterY;
 	GLdouble currentRasterPosition[4];
 	
diff --git a/mgllib/mglDrawImage.mexmaci64 b/mgllib/mglDrawImage.mexmaci64
index 555140d9..1e03dde4 100755
Binary files a/mgllib/mglDrawImage.mexmaci64 and b/mgllib/mglDrawImage.mexmaci64 differ
diff --git a/mgllib/mglFillOval.mexmaci64 b/mgllib/mglFillOval.mexmaci64
index af7dcc01..ba0a541a 100755
Binary files a/mgllib/mglFillOval.mexmaci64 and b/mgllib/mglFillOval.mexmaci64 differ
diff --git a/mgllib/mglFillRect.mexmaci64 b/mgllib/mglFillRect.mexmaci64
index 63ebca5d..7cfa33d9 100755
Binary files a/mgllib/mglFillRect.mexmaci64 and b/mgllib/mglFillRect.mexmaci64 differ
diff --git a/mgllib/mglFillRect3D.mexmaci64 b/mgllib/mglFillRect3D.mexmaci64
index 425fe3c6..34fb823c 100755
Binary files a/mgllib/mglFillRect3D.mexmaci64 and b/mgllib/mglFillRect3D.mexmaci64 differ
diff --git a/mgllib/mglFrameGrab.c b/mgllib/mglFrameGrab.c
index 1ee01b14..6133fa08 100644
--- a/mgllib/mglFrameGrab.c
+++ b/mgllib/mglFrameGrab.c
@@ -74,7 +74,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
   }
 
   // create the matlab array for returning data
-  int dims[3];
+  mwSize dims[3];
   dims[0] = (mwSize)width;dims[1] = (mwSize)height;dims[2] = 3;
   plhs[0] = mxCreateNumericArray(3,dims,mxSINGLE_CLASS,mxREAL);
   GLfloat *outPtr = (GLfloat*)mxGetPr(plhs[0]);
diff --git a/mgllib/mglFrameGrab.mexmaci64 b/mgllib/mglFrameGrab.mexmaci64
index 4ee77b91..e12b8a33 100755
Binary files a/mgllib/mglFrameGrab.mexmaci64 and b/mgllib/mglFrameGrab.mexmaci64 differ
diff --git a/mgllib/mglGetKeys.mexmaci64 b/mgllib/mglGetKeys.mexmaci64
index 1dca7328..e86cdfc6 100755
Binary files a/mgllib/mglGetKeys.mexmaci64 and b/mgllib/mglGetKeys.mexmaci64 differ
diff --git a/mgllib/mglGetMouse.c b/mgllib/mglGetMouse.c
index c1ecd656..a39372c1 100644
--- a/mgllib/mglGetMouse.c
+++ b/mgllib/mglGetMouse.c
@@ -50,7 +50,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
 
   // create the output structure
   const char *fieldNames[] =  {"buttons","x","y" };
-  const int outDims[2] = {1, 1};
+  const mwSize outDims[2] = {1, 1};
   plhs[0] = mxCreateStructArray(1,outDims,3,fieldNames);
 
   // and the field for X
diff --git a/mgllib/mglGetMouse.mexmaci64 b/mgllib/mglGetMouse.mexmaci64
index a90bde9e..606a5b6f 100755
Binary files a/mgllib/mglGetMouse.mexmaci64 and b/mgllib/mglGetMouse.mexmaci64 differ
diff --git a/mgllib/mglGetSecs.mexmaci64 b/mgllib/mglGetSecs.mexmaci64
index 238a8eb1..1867dbdb 100755
Binary files a/mgllib/mglGetSecs.mexmaci64 and b/mgllib/mglGetSecs.mexmaci64 differ
diff --git a/mgllib/mglGetWindowPos.mexmaci64 b/mgllib/mglGetWindowPos.mexmaci64
index f27fbc5d..3b281c20 100755
Binary files a/mgllib/mglGetWindowPos.mexmaci64 and b/mgllib/mglGetWindowPos.mexmaci64 differ
diff --git a/mgllib/mglGluAnnulus.mexmaci64 b/mgllib/mglGluAnnulus.mexmaci64
index 8fc2aac7..af775678 100755
Binary files a/mgllib/mglGluAnnulus.mexmaci64 and b/mgllib/mglGluAnnulus.mexmaci64 differ
diff --git a/mgllib/mglGluDisk.mexmaci64 b/mgllib/mglGluDisk.mexmaci64
index 34fb5e04..ad0d48c5 100755
Binary files a/mgllib/mglGluDisk.mexmaci64 and b/mgllib/mglGluDisk.mexmaci64 differ
diff --git a/mgllib/mglGluPartialDisk.mexmaci64 b/mgllib/mglGluPartialDisk.mexmaci64
index 3d95547d..91d9c2ec 100755
Binary files a/mgllib/mglGluPartialDisk.mexmaci64 and b/mgllib/mglGluPartialDisk.mexmaci64 differ
diff --git a/mgllib/mglIsCursorVisible.mexmaci64 b/mgllib/mglIsCursorVisible.mexmaci64
index 16a1fcf9..8facdd89 100755
Binary files a/mgllib/mglIsCursorVisible.mexmaci64 and b/mgllib/mglIsCursorVisible.mexmaci64 differ
diff --git a/mgllib/mglMakeMetal.m b/mgllib/mglMakeMetal.m
index b61337e0..c2261209 100644
--- a/mgllib/mglMakeMetal.m
+++ b/mgllib/mglMakeMetal.m
@@ -52,6 +52,8 @@ function mglMakeMetal(varargin)
 %%%%%%%%%%%%%%%
 function info = processArgs(args)
 
+info.verbose = false;
+
 % Gets the mgl header file mgl.h to compare the timestamps
 % note that this will cd into the mgllib directory if it
 % doesn't find the mgl.h file in the current directory
@@ -205,7 +207,7 @@ function mglMakeMetal(varargin)
 %             function will return 1 for yes and 0 for no. If toall is set to 1, then
 %             'Yes to all' will be an option, which if selected will return inf
 %
-function r = askuser(question,toall,useDialog)
+function r = askuser(question,toall,useDialog,verbose)
 
 % check arguments
 if ~any(nargin == [1 2 3])
@@ -215,14 +217,12 @@ function mglMakeMetal(varargin)
 
 if ieNotDefined('toall'),toall = 0;,end
 if ieNotDefined('useDialog'),useDialog=0;end
+if ieNotDefined('verbose'),verbose=false;end
 
 % if explicitly set to useDialog then use dialog, otherwise
 % check verbose setting
 if useDialog
   verbose = 1;
-else
-  verbose = mrGetPref('verbose');
-  if strcmp(verbose,'Yes'),verbose = 1;else,verbose = 0;end
 end
 
 r = [];
diff --git a/mgllib/mglMetalExecutableName.m b/mgllib/mglMetalExecutableName.m
index 9d0551a5..171a3477 100644
--- a/mgllib/mglMetalExecutableName.m
+++ b/mgllib/mglMetalExecutableName.m
@@ -8,30 +8,39 @@
 %    purpose: Returns the name of the mglMetal application
 %      usage: mglAppName = mglMetalExecutableName;
 %
-function [metalAppName metalDir] = mglMetalExecutableName
+function [metalAppName, metalDir] = mglMetalExecutableName
 
-mglAppName = '';
+metalAppName = '';
 metalDir = '';
 
-% find where the runtime is (why is this so hard with xcode?)
-mglSearchDir = '~/Library/Developer/XCode/DerivedData/mglMetal*';
-mglDir = dir(mglSearchDir);
-if isempty(mglSearchDir)
-  disp(sprintf('(mglOpen) Could not find mglMetal executable in %s. Perhaps you need to compile in XCode',mglSearchDir))
-  return
+% Search xCode for the mglMetal build output. (why is this so hard with xcode?)
+xCodeOutputPath = '~/Library/Developer/XCode/DerivedData/';
+xCodeOutputDir = dir(xCodeOutputPath);
+if isempty(xCodeOutputDir)
+    fprintf('(mglOpen) Could not find mglMetal executable in %s. Perhaps you need to compile in XCode\n',xCodeOutputPath)
+    return
 end
-mglDir = fullfile(mglDir(1).folder,mglDir(1).name);
-mglDir = fullfile(mglDir,'Build','Products','Release');
-metalAppName = fullfile(mglDir,'mglMetal.app');
-if ~isdir(metalAppName)
-  disp(sprintf('(mglOpen) Could not find mglMetal executable in %s. Perhaps you need to compile in XCode',metalAppName))
-  return
+
+% Choose the most recent "mglMetal-" build dir.
+isMglMetal = cellfun(@(s)startsWith(s, "mglMetal-"), {xCodeOutputDir.name});
+mglMetalDirs = xCodeOutputDir(isMglMetal);
+[~, sortedIndexes] = sort([mglMetalDirs.datenum]);
+mglMetalDir = mglMetalDirs(sortedIndexes(end));
+
+% Get the full absolute path to the most recent mglMetal app.
+mglMetalPath = fullfile(mglMetalDir.folder, mglMetalDir.name, 'Build','Products','Release');
+metalAppName = fullfile(mglMetalPath, 'mglMetal.app');
+if ~isfolder(metalAppName)
+    fprintf('(mglOpen) Could not find mglMetal app folder %s. Perhaps you need to compile in XCode\n',mglMetalPath)
+    return
 end
 
-%get directory where mglMetal app runs from
+% Get working directory where mglMetal app runs from.
+% This seems to be a macOs/xCode convention, so good to use this during
+% development.
+% Once stable, we may be able to choose any dir to run from?
 metalDir = '~/Library/Containers/gru.mglMetal/Data';
-if ~isdir(metalDir)
-    disp(sprintf('(mglMetalTest) Please compile the mglMetal app which should create the dir: %s',metalDir));
-    while ~isdir(metalDir)
-    end
+if ~isfolder(metalDir)
+    fprintf('(mglMetalTest) Please compile the mglMetal app which should create the dir: %s\n',metalDir);
+    return
 end
diff --git a/mgllib/mglMetalOpen.m b/mgllib/mglMetalOpen.m
index fb981ecc..5851e147 100644
--- a/mgllib/mglMetalOpen.m
+++ b/mgllib/mglMetalOpen.m
@@ -14,13 +14,13 @@
 function mglMetalOpen(whichScreen,screenWidth,screenHeight)
 
 if nargin == 0
-  whichScreen = 1;
+    whichScreen = 1;
 end
 
 % get mglMetal application name
-[metalAppName metalDir] = mglMetalExecutableName;
+[metalAppName, metalDir] = mglMetalExecutableName;
 if isempty(metalAppName)
-  return
+    return
 end
 
 % create the mgl global variable
@@ -57,13 +57,13 @@ function mglMetalOpen(whichScreen,screenWidth,screenHeight)
 
 % check if mglMetal is running
 if mglMetalIsRunning
-  disp(sprintf('(mglMetalOpen) mglMetal executable is already running'));
-  % then kill it
-  mglMetalShutdown;
+    fprintf('(mglMetalOpen) mglMetal executable is already running\n');
+    % then kill it
+    mglMetalShutdown;
 end
 
 %start up mglMetal
 if ~isnan(whichScreen)
-  disp(sprintf('(mglMetalOpen) Starting up mglMetal executable: %s',metalAppName));
-  system(sprintf('open %s',metalAppName));
+    fprintf('(mglMetalOpen) Starting up mglMetal executable: %s\n',metalAppName);
+    system(sprintf('open %s',metalAppName));
 end
diff --git a/mgllib/mglPoints2c.mexmaci64 b/mgllib/mglPoints2c.mexmaci64
index 0a01960a..2cd19d6b 100755
Binary files a/mgllib/mglPoints2c.mexmaci64 and b/mgllib/mglPoints2c.mexmaci64 differ
diff --git a/mgllib/mglPoints3.mexmaci64 b/mgllib/mglPoints3.mexmaci64
index a3c65482..7eeddd01 100755
Binary files a/mgllib/mglPoints3.mexmaci64 and b/mgllib/mglPoints3.mexmaci64 differ
diff --git a/mgllib/mglPolygon.mexmaci64 b/mgllib/mglPolygon.mexmaci64
index a3c66690..b6fd811a 100755
Binary files a/mgllib/mglPolygon.mexmaci64 and b/mgllib/mglPolygon.mexmaci64 differ
diff --git a/mgllib/mglPolygon3D.mexmaci64 b/mgllib/mglPolygon3D.mexmaci64
index cb1fa3d5..866dea29 100755
Binary files a/mgllib/mglPolygon3D.mexmaci64 and b/mgllib/mglPolygon3D.mexmaci64 differ
diff --git a/mgllib/mglPrivateClose.mexmaci64 b/mgllib/mglPrivateClose.mexmaci64
index 2fd89259..204a4db9 100755
Binary files a/mgllib/mglPrivateClose.mexmaci64 and b/mgllib/mglPrivateClose.mexmaci64 differ
diff --git a/mgllib/mglPrivateCreateTexture.c b/mgllib/mglPrivateCreateTexture.c
index 95b6c34f..dc679a68 100644
--- a/mgllib/mglPrivateCreateTexture.c
+++ b/mgllib/mglPrivateCreateTexture.c
@@ -156,7 +156,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
   }
 
   // variables for dimensions
-  const int *dims = mxGetDimensions(prhs[0]); // rows cols
+  const mwSize *dims = mxGetDimensions(prhs[0]); // rows cols
   const mwSize ndims = mxGetNumberOfDimensions(prhs[0]); 
   const size_t n = mxGetNumberOfElements(prhs[0]);
   int imageWidth, imageHeight;
@@ -434,7 +434,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
 
   // create the output structure
   const char *fieldNames[] =  {"textureNumber","imageWidth","imageHeight","textureAxes","textureType","liveBuffer" };
-  int outDims[2] = {1, 1};
+  mwSize outDims[2] = {1, 1};
   plhs[0] = mxCreateStructArray(1,outDims,6,fieldNames);
 
   // now set the textureNumber field
diff --git a/mgllib/mglPrivateCreateTexture.mexmaci64 b/mgllib/mglPrivateCreateTexture.mexmaci64
index fc19f6fa..03f7a40c 100755
Binary files a/mgllib/mglPrivateCreateTexture.mexmaci64 and b/mgllib/mglPrivateCreateTexture.mexmaci64 differ
diff --git a/mgllib/mglPrivateDeleteSound.mexmaci64 b/mgllib/mglPrivateDeleteSound.mexmaci64
index d91a1ee4..54f40b40 100755
Binary files a/mgllib/mglPrivateDeleteSound.mexmaci64 and b/mgllib/mglPrivateDeleteSound.mexmaci64 differ
diff --git a/mgllib/mglPrivateDeleteTexture.mexmaci64 b/mgllib/mglPrivateDeleteTexture.mexmaci64
index 79fa0d6a..843a03cd 100755
Binary files a/mgllib/mglPrivateDeleteTexture.mexmaci64 and b/mgllib/mglPrivateDeleteTexture.mexmaci64 differ
diff --git a/mgllib/mglPrivateDescribeDisplays.mexmaci64 b/mgllib/mglPrivateDescribeDisplays.mexmaci64
index 87224e6f..d1f80625 100755
Binary files a/mgllib/mglPrivateDescribeDisplays.mexmaci64 and b/mgllib/mglPrivateDescribeDisplays.mexmaci64 differ
diff --git a/mgllib/mglPrivateGetGammaTable.c b/mgllib/mglPrivateGetGammaTable.c
index dffa0409..aaa6f550 100644
--- a/mgllib/mglPrivateGetGammaTable.c
+++ b/mgllib/mglPrivateGetGammaTable.c
@@ -61,7 +61,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
   formulaResults = getGammaFormula(&redMin,&redMax,&redGamma,&greenMin,&greenMax,&greenGamma,&blueMin,&blueMax,&blueGamma);
 
   if (result) {    
-    int ndims[] = {1};int nFormulaFields = 9;int nTableFields = 3;
+    mwSize ndims[] = {1};int nFormulaFields = 9;int nTableFields = 3;
     const char *formulaFieldNames[] = {"redMin","redMax","redGamma","greenMin","greenMax","greenGamma","blueMin","blueMax","blueGamma","redTable","greenTable","blueTable"};
     const char *tableFieldNames[] = {"redTable","greenTable","blueTable"};
     if (formulaResults)
diff --git a/mgllib/mglPrivateGetGammaTable.mexmaci64 b/mgllib/mglPrivateGetGammaTable.mexmaci64
index e5e19171..3bb5152a 100755
Binary files a/mgllib/mglPrivateGetGammaTable.mexmaci64 and b/mgllib/mglPrivateGetGammaTable.mexmaci64 differ
diff --git a/mgllib/mglPrivateGetKeyEvent.c b/mgllib/mglPrivateGetKeyEvent.c
index ccd2eca9..50bc442a 100644
--- a/mgllib/mglPrivateGetKeyEvent.c
+++ b/mgllib/mglPrivateGetKeyEvent.c
@@ -156,7 +156,7 @@ mxArray *makeOutputStructure(double **outptrCharCode, double **outptrKeyCode, do
   // create the output structure
   mxArray *plhs;
   const char *fieldNames[] =  {"charCode","keyCode","keyboard","when" };
-  int outDims[2] = {1, 1};
+  mwSize outDims[2] = {1, 1};
   plhs = mxCreateStructArray(1,outDims,4,fieldNames);
   
   // Create the output fields
diff --git a/mgllib/mglPrivateGetKeyEvent.mexmaci64 b/mgllib/mglPrivateGetKeyEvent.mexmaci64
index ab8be91f..2fda4bda 100755
Binary files a/mgllib/mglPrivateGetKeyEvent.mexmaci64 and b/mgllib/mglPrivateGetKeyEvent.mexmaci64 differ
diff --git a/mgllib/mglPrivateGetMouseEvent.c b/mgllib/mglPrivateGetMouseEvent.c
index a793269d..17df40de 100644
--- a/mgllib/mglPrivateGetMouseEvent.c
+++ b/mgllib/mglPrivateGetMouseEvent.c
@@ -152,7 +152,7 @@ mxArray *makeOutputStructure(double **outptrX, double **outptrY, double **outptr
   // create the output structure
   mxArray *plhs;
   const char *fieldNames[] =  {"x","y","button","when" };
-  int outDims[2] = {1, 1};
+  mwSize outDims[2] = {1, 1};
   plhs = mxCreateStructArray(1,outDims,4,fieldNames);
 
   // set the fields
diff --git a/mgllib/mglPrivateGetMouseEvent.mexmaci64 b/mgllib/mglPrivateGetMouseEvent.mexmaci64
index eb2b2d03..6baf41a8 100755
Binary files a/mgllib/mglPrivateGetMouseEvent.mexmaci64 and b/mgllib/mglPrivateGetMouseEvent.mexmaci64 differ
diff --git a/mgllib/mglPrivateInstallSound.c b/mgllib/mglPrivateInstallSound.c
index 60b6d7be..9c49ec1f 100644
--- a/mgllib/mglPrivateInstallSound.c
+++ b/mgllib/mglPrivateInstallSound.c
@@ -252,7 +252,7 @@ unsigned long installSoundFromData(int *d, unsigned int nChannels, unsigned int
   NSSound* sound = [[NSSound alloc] initWithData:data];
 
   if (verbose)
-    mexPrintf("(mglPrivateInstallSound:installSoundFromData) Sound pointer: %i\n",(unsigned int)sound);
+    mexPrintf("(mglPrivateInstallSound:installSoundFromData) Sound pointer: %lu\n",(unsigned long)sound);
 
   // data is no longer needed. 
   [data release];
diff --git a/mgllib/mglPrivateInstallSound.mexmaci64 b/mgllib/mglPrivateInstallSound.mexmaci64
index 9859e840..7c97336a 100755
Binary files a/mgllib/mglPrivateInstallSound.mexmaci64 and b/mgllib/mglPrivateInstallSound.mexmaci64 differ
diff --git a/mgllib/mglPrivateKeycodeToChar.mexmaci64 b/mgllib/mglPrivateKeycodeToChar.mexmaci64
index 912e819d..56259e73 100755
Binary files a/mgllib/mglPrivateKeycodeToChar.mexmaci64 and b/mgllib/mglPrivateKeycodeToChar.mexmaci64 differ
diff --git a/mgllib/mglPrivateListener.c b/mgllib/mglPrivateListener.c
index bbf97191..dfe47338 100644
--- a/mgllib/mglPrivateListener.c
+++ b/mgllib/mglPrivateListener.c
@@ -177,7 +177,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
         pthread_mutex_unlock(&mut);
 	// return event as a matlab structure
         const char *fieldNames[] =  {"when","keyCode","shift","control","alt","command","capslock","keyboard"};
-        int outDims[2] = {1, 1};
+        mwSize outDims[2] = {1, 1};
         plhs[0] = mxCreateStructArray(1,outDims,8,fieldNames);
 
         mxSetField(plhs[0],0,"when",mxCreateDoubleMatrix(1,1,mxREAL));
@@ -220,7 +220,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
         int i = 0;
 	// return event as a matlab structure
         const char *fieldNames[] =  {"when","keyCode"};
-        int outDims[2] = {1, 1};
+        mwSize outDims[2] = {1, 1};
         plhs[0] = mxCreateStructArray(1,outDims,2,fieldNames);
 
         mxSetField(plhs[0],0,"when",mxCreateDoubleMatrix(1,count,mxREAL));
@@ -275,7 +275,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
         pthread_mutex_unlock(&mut);
     // return event as a matlab structure
         const char *fieldNames[] =  {"when","buttons","x","y","clickState"};
-        int outDims[2] = {1, 1};
+        mwSize outDims[2] = {1, 1};
         plhs[0] = mxCreateStructArray(1,outDims,5,fieldNames);
 
         mxSetField(plhs[0],0,"when",mxCreateDoubleMatrix(1,1,mxREAL));
@@ -313,7 +313,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
         int i = 0;
     // return event as a matlab structure
         const char *fieldNames[] =  {"when","buttons","x","y","clickState"};
-        int outDims[2] = {1, 1};
+        mwSize outDims[2] = {1, 1};
         plhs[0] = mxCreateStructArray(1,outDims,5,fieldNames);
 
         mxSetField(plhs[0],0,"when",mxCreateDoubleMatrix(1,count,mxREAL));
diff --git a/mgllib/mglPrivateListener.mexmaci64 b/mgllib/mglPrivateListener.mexmaci64
index 162d6dc2..548976c5 100755
Binary files a/mgllib/mglPrivateListener.mexmaci64 and b/mgllib/mglPrivateListener.mexmaci64 differ
diff --git a/mgllib/mglPrivateMoveWindow.mexmaci64 b/mgllib/mglPrivateMoveWindow.mexmaci64
index e6068940..a0699beb 100755
Binary files a/mgllib/mglPrivateMoveWindow.mexmaci64 and b/mgllib/mglPrivateMoveWindow.mexmaci64 differ
diff --git a/mgllib/mglPrivateMovie.c b/mgllib/mglPrivateMovie.c
index 2cfc0bf4..5a751b70 100644
--- a/mgllib/mglPrivateMovie.c
+++ b/mgllib/mglPrivateMovie.c
@@ -81,7 +81,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
     if (moviePointer != 0) {
       // create the output structure
       const char *fieldNames[] =  {"filename","moviePointer"};
-      int outDims[2] = {1, 1};
+      mwSize outDims[2] = {1, 1};
       plhs[0] = mxCreateStructArray(1,outDims,2,fieldNames);
       
       // add the field for filename, but leave it empty since mglMovie will fill it in
@@ -475,7 +475,7 @@ mxArray *doMovieCommand(int command, unsigned long moviePointer, const mxArray *
       int totalReadCount = 0,bufSize = widthAndHeight[0]*widthAndHeight[1]*3;
       // note that width/height are intentionally swaped here so that
       // image displays correctly when you do imagesc
-      int dims[3] = {widthAndHeight[1], widthAndHeight[0], 3};
+      mwSize dims[3] = {widthAndHeight[1], widthAndHeight[0], 3};
       retval = mxCreateNumericArray(3, dims, mxUINT8_CLASS, mxREAL);
       uint8 *outputPtr = (uint8 *)mxGetPr(retval), *outputPtrReader = outputPtr;
       // need to read in blocks
diff --git a/mgllib/mglPrivateMovie.mexmaci64 b/mgllib/mglPrivateMovie.mexmaci64
index ed21d74e..ee2c8b07 100755
Binary files a/mgllib/mglPrivateMovie.mexmaci64 and b/mgllib/mglPrivateMovie.mexmaci64 differ
diff --git a/mgllib/mglPrivateOpen.c b/mgllib/mglPrivateOpen.c
index f5687546..b0bce598 100644
--- a/mgllib/mglPrivateOpen.c
+++ b/mgllib/mglPrivateOpen.c
@@ -676,7 +676,7 @@ unsigned long cglOpen(double *displayNumber, int *screenWidth, int *screenHeight
   attribs[i++] = kCGLPFADoubleBuffer;
   attribs[i++] = kCGLPFAStencilSize; attribs[i++] = (CGLPixelFormatAttribute)8;
   attribs[i++] = kCGLPFADisplayMask; attribs[i++] = (CGLPixelFormatAttribute)displayMask;
-  attribs[i++] = (CGLPixelFormatAttribute)NULL;
+  attribs[i++] = 0;
 
   CGLPixelFormatObj pixelFormatObj;
   GLint numPixelFormats;
diff --git a/mgllib/mglPrivateOpen.mexmaci64 b/mgllib/mglPrivateOpen.mexmaci64
index 58b1a176..7042fa05 100755
Binary files a/mgllib/mglPrivateOpen.mexmaci64 and b/mgllib/mglPrivateOpen.mexmaci64 differ
diff --git a/mgllib/mglPrivatePlaySound.mexmaci64 b/mgllib/mglPrivatePlaySound.mexmaci64
index f9e7d5d2..3fba4be7 100755
Binary files a/mgllib/mglPrivatePlaySound.mexmaci64 and b/mgllib/mglPrivatePlaySound.mexmaci64 differ
diff --git a/mgllib/mglPrivatePostEvent.mexmaci64 b/mgllib/mglPrivatePostEvent.mexmaci64
index b4089d0a..59b961ae 100755
Binary files a/mgllib/mglPrivatePostEvent.mexmaci64 and b/mgllib/mglPrivatePostEvent.mexmaci64 differ
diff --git a/mgllib/mglPrivateSetGammaTable.mexmaci64 b/mgllib/mglPrivateSetGammaTable.mexmaci64
index 8f22087d..83d8ec5a 100755
Binary files a/mgllib/mglPrivateSetGammaTable.mexmaci64 and b/mgllib/mglPrivateSetGammaTable.mexmaci64 differ
diff --git a/mgllib/mglPrivateSetSound.mexmaci64 b/mgllib/mglPrivateSetSound.mexmaci64
index 537bb9dc..0daa20bd 100755
Binary files a/mgllib/mglPrivateSetSound.mexmaci64 and b/mgllib/mglPrivateSetSound.mexmaci64 differ
diff --git a/mgllib/mglPrivateSwitchDisplay.mexmaci64 b/mgllib/mglPrivateSwitchDisplay.mexmaci64
index 5f8a017b..d0dddeab 100755
Binary files a/mgllib/mglPrivateSwitchDisplay.mexmaci64 and b/mgllib/mglPrivateSwitchDisplay.mexmaci64 differ
diff --git a/mgllib/mglPrivateSystemCheck.mexmaci64 b/mgllib/mglPrivateSystemCheck.mexmaci64
index d09e1130..cdc9a0c4 100755
Binary files a/mgllib/mglPrivateSystemCheck.mexmaci64 and b/mgllib/mglPrivateSystemCheck.mexmaci64 differ
diff --git a/mgllib/mglPrivateText.mexmaci64 b/mgllib/mglPrivateText.mexmaci64
index 4d8c04a4..61fb336e 100755
Binary files a/mgllib/mglPrivateText.mexmaci64 and b/mgllib/mglPrivateText.mexmaci64 differ
diff --git a/mgllib/mglPrivateVolume.mexmaci64 b/mgllib/mglPrivateVolume.mexmaci64
index e48c0a49..01634720 100755
Binary files a/mgllib/mglPrivateVolume.mexmaci64 and b/mgllib/mglPrivateVolume.mexmaci64 differ
diff --git a/mgllib/mglResolution.c b/mgllib/mglResolution.c
index c709d572..97da7c37 100644
--- a/mgllib/mglResolution.c
+++ b/mgllib/mglResolution.c
@@ -40,7 +40,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
   int frameRate,screenWidth,screenHeight,bitDepth,displayNumber,numDisplays,defaultDisplayNum,changeResolution = 0;
   int requestedScreenWidth, requestedScreenHeight, requestedFrameRate, requestedBitDepth;
   const char *fieldNames[] = {"displayNumber","numDisplays","screenWidth","screenHeight","frameRate","bitDepth"};
-  const int outDims[2] = {1, 1};
+  const mwSize outDims[2] = {1, 1};
 
   // get how many displays there are at which one is the default.
   getNumDisplaysAndDefault(&numDisplays,&defaultDisplayNum);
diff --git a/mgllib/mglResolution.mexmaci64 b/mgllib/mglResolution.mexmaci64
index 5de44d58..71c13db0 100755
Binary files a/mgllib/mglResolution.mexmaci64 and b/mgllib/mglResolution.mexmaci64 differ
diff --git a/mgllib/mglSetMousePosition.mexmaci64 b/mgllib/mglSetMousePosition.mexmaci64
index 3e165508..fee92764 100755
Binary files a/mgllib/mglSetMousePosition.mexmaci64 and b/mgllib/mglSetMousePosition.mexmaci64 differ
diff --git a/mgllib/mglShader.mexmaci64 b/mgllib/mglShader.mexmaci64
index 2ece48d9..f0787dad 100755
Binary files a/mgllib/mglShader.mexmaci64 and b/mgllib/mglShader.mexmaci64 differ
diff --git a/mgllib/mglSocketClose.mexmaci64 b/mgllib/mglSocketClose.mexmaci64
index b7782ca6..88cdbe6b 100755
Binary files a/mgllib/mglSocketClose.mexmaci64 and b/mgllib/mglSocketClose.mexmaci64 differ
diff --git a/mgllib/mglSocketDataWaiting.mexmaci64 b/mgllib/mglSocketDataWaiting.mexmaci64
index da858df0..629bca5f 100755
Binary files a/mgllib/mglSocketDataWaiting.mexmaci64 and b/mgllib/mglSocketDataWaiting.mexmaci64 differ
diff --git a/mgllib/mglSocketOpen.c b/mgllib/mglSocketOpen.c
index 709c0784..1e56b575 100644
--- a/mgllib/mglSocketOpen.c
+++ b/mgllib/mglSocketOpen.c
@@ -73,7 +73,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
   }
 
   // make socket non-blocking
-  if (fcntl(socketDescriptor, F_SETFL, O_BLOCK) < 0) {
+  if (fcntl(socketDescriptor, F_SETFL, O_NONBLOCK) < 0) {
     mexPrintf("(mglSocketOpen) Could not set socket to non-blocking. This will not record io events until a connection is made.\n");
     // return
     plhs[0] = mxCreateDoubleMatrix(0,0,mxREAL);
@@ -116,7 +116,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
 
   // return structure
   const char *fieldNames[] = {"socketName","socketDescriptor","connectionDescriptor"};
-  const int outDims[2] = {1, 1};
+  const mwSize outDims[2] = {1, 1};
  plhs[0] = mxCreateStructArray(1,outDims,3,fieldNames);
  mxSetField(plhs[0],0,"socketName",mxCreateString(socketName));
  mxSetField(plhs[0],0,"socketDescriptor",mxCreateDoubleMatrix(1,1,mxREAL));
diff --git a/mgllib/mglSocketOpen.mexmaci64 b/mgllib/mglSocketOpen.mexmaci64
new file mode 100755
index 00000000..dd48e861
Binary files /dev/null and b/mgllib/mglSocketOpen.mexmaci64 differ
diff --git a/mgllib/mglSocketRead.c b/mgllib/mglSocketRead.c
index ea91be50..7594fcf2 100644
--- a/mgllib/mglSocketRead.c
+++ b/mgllib/mglSocketRead.c
@@ -96,7 +96,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
  size_t buflen = dataSize * len;
 
  // allocate space for buffer
- const int dims[2] = {1,len};
+ const mwSize dims[2] = {1,len};
  plhs[0] = mxCreateNumericArray(1,dims,mxDOUBLE_CLASS,mxREAL);
 
  // read data
diff --git a/mgllib/mglSocketRead.mexmaci64 b/mgllib/mglSocketRead.mexmaci64
index db3077b4..0547632e 100755
Binary files a/mgllib/mglSocketRead.mexmaci64 and b/mgllib/mglSocketRead.mexmaci64 differ
diff --git a/mgllib/mglSocketWrite.mexmaci64 b/mgllib/mglSocketWrite.mexmaci64
index 6b729aa2..4833c914 100755
Binary files a/mgllib/mglSocketWrite.mexmaci64 and b/mgllib/mglSocketWrite.mexmaci64 differ
diff --git a/mgllib/mglStencilCreateBegin.mexmaci64 b/mgllib/mglStencilCreateBegin.mexmaci64
index ed4e7207..772a3c4c 100755
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diff --git a/mgllib/mglStencilCreateEnd.mexmaci64 b/mgllib/mglStencilCreateEnd.mexmaci64
index 8e85df7d..f3e47fda 100755
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diff --git a/mgllib/mglStencilSelect.mexmaci64 b/mgllib/mglStencilSelect.mexmaci64
index cb0e0034..88970a62 100755
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diff --git a/mgllib/mglStrokeText.mexmaci64 b/mgllib/mglStrokeText.mexmaci64
index 8059144e..ddfb1992 100755
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diff --git a/mgllib/mglTransform.mexmaci64 b/mgllib/mglTransform.mexmaci64
index 104afd05..ffda68e8 100755
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diff --git a/mgllib/mglUnbindFrameBufferObject.mexmaci64 b/mgllib/mglUnbindFrameBufferObject.mexmaci64
index a28854e1..6db5b5da 100755
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