diff --git a/AOEMods.Essence/Chunky/RRTex/RRTexReader.cs b/AOEMods.Essence/Chunky/RRTex/RRTexReader.cs
index 809a665..f31909a 100644
--- a/AOEMods.Essence/Chunky/RRTex/RRTexReader.cs
+++ b/AOEMods.Essence/Chunky/RRTex/RRTexReader.cs
@@ -90,6 +90,22 @@ private static RRTexDataTman ReadDataTman(ChunkyFileReader reader, ChunkHeader h
                 Console.WriteLine($"RRTexDataTman.unknown6 not 1 (was {unknown6})");
         }
 
+        if (unknown4 == 1)
+        {
+
+        }
+        else if (unknown4 == 2)
+        {
+            int unknown7 = reader.ReadInt32();
+
+            if (unknown7 != 1)
+                Console.WriteLine($"RRTexDataTman.unknown7 not 1 (was {unknown7})");
+        }
+        else
+        {
+            Console.WriteLine($"RRTexDataTman.unknown4 not 1 or 2 (was {unknown4})");
+        }
+
         int[] mipTextureCounts = new int[mipCount];
         for (int i = 0; i < mipCount; i++)
         {
@@ -111,6 +127,12 @@ private static RRTexDataTman ReadDataTman(ChunkyFileReader reader, ChunkHeader h
             }
         }
 
+        long realLength = reader.BaseStream.Position - header.DataPosition;
+        if (header.Length != realLength)
+        {
+            Console.WriteLine($"RRTexDataTman header specifies {header.Length} bytes, but we read {realLength} bytes. Image likely to be corrupt and AOEMods.Essence may need to be patched.");
+        }
+
         return new(
             unknown1, width, height, unknown2, unknown3, textureCompression,
             mipCount, unknown4, mipTextureCounts, sizeCompressed, sizeUncompressed