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Troubleshooting

Sometimes things don't go as expected. Here are some of answers to the most common issues you might bump into:

Q: Error: Microsoft Visual C++ 14.0 is required
  1. Follow the link to download the visual studio build tools.
  2. Click the vs_buildtools__xxx.exe file you just downloaded.
  3. Follow the instruction of the Visual Studio Installer, until it finishes its downloading and installation.
  4. Select C++ Build Tools and click Install.

visual studio installer snapshot

Q: I've installed git but git commands don't work in the commandline prompt.

See this post for instructions on how to add git to the environment PATH in Windows.

Q: conda commands don't work.

Try running them from the Conda Prompt. Depending on how you installed Anaconda, it might not be available by default on the normal Windows command prompt.

Q: When trying to install the framework in Rhino, it fails indicating the lib folder of IronPython does not exist.

Make sure you have opened Rhino 6 and Grasshopper at least once, so that it finishes setting up all its internal folder structure.

Q: Windows error in the Grasshopper rpc call.

Make sure you enter the correct python path in the GH file. An easy way to obtain the path is to type where python in your conda prompt after you activate coop_assembly_ws.

GH windows error

Q: Runtime error: Fault in the Grasshopper rpc call.

GH_runtime_error_fault

Try the following:

  1. If you have V-Ray installed, uninstall V-Ray for Rhinoceros and restart your computer.

  2. If the problem persists after retrying, first open your Task Manager and end all Python processes.

    Then in your activated conda environment, run:

    cd docs/gh_example_instructions
python rpc_test.py

    It should print the following:

    Starting a new proxy server...
New proxy server started.

    Then, retry opening the Grasshopper file.

Q: In Xfunc call, error message "Cannot find DLL specified. (_Arpack ...)"

This happens because some previous calls blocked the scipy complied libraries. For a temporal fix, in your conda environment, uninstall pip install scipy and then pip install scipy=1.3.1 works.

Updating packages

Updating the conda environment

If you've installed the environment following the instructions above, but want to update the env (e.g. if the yml file is updated), run the following command to update:

conda env update -n coop_assembly_ws -f coop_assembly_ws.yml

Updating individual packages

Updating only some of the dependencies? Here are some convenient links (remember to activate your conda environment by conda activate coop_assembly_ws before you do these!):

Update coop_assembly:

pip install --upgrade git+https://github.com/createchaos/coop_assembly.git@master#egg=coop_assembly
python -m compas_rhino.install -p coop_assembly

Update pychoreo:

pip install --upgrade git+https://github.com/yijiangh/pychoreo.git@feature/compas_fab-integration#egg=pychoreo

Update compas_fab:

pip install --upgrade git+https://github.com/yijiangh/compas_fab.git@feature/dms2019_ws#egg=compas_fab
python -m compas_rhino.install -p compas_fab