DLL load failed while importing _simbody: The specified module could not be found

[Nev Pires]

I'm following the instructions found here: https://simtk-confluence.stanford.edu:8 ... +in+Python

I opened a command window and ran the following:

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cd "C:\OpenSim 4.4\sdk\Python
python -m pip install .

Everything seems that it runs correctly.

When I then try to run

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import opensim

it fails and I get the error:

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Traceback (most recent call last):
  File "C:\Users\npires.OMG\OneDrive - OMG PLC\Work Projects\Codes\recover-video-transfer-list\recover_video_transfer_list.py", line 6, in <module>
    import opensim
  File "C:\ProgramData\Anaconda3\lib\opensim\__init__.py", line 6, in <module>
    from .simbody import *
  File "C:\ProgramData\Anaconda3\lib\opensim\simbody.py", line 13, in <module>
    from . import _simbody
ImportError: DLL load failed while importing _simbody: The specified module could not be found.

I'm running Windows 11, OpenSim 4.4 and Python 3.10.9 packaged by Anaconda.

I have added the OpenSim 4.4/bin folder to the environment variables

Not sure why it's failing to import the opensim module as by all indications, it's been installed correctly.

Thanks!

[Thomas Uchida]

Please see Topic 16108: viewtopicPhpbb.php?f=91&t=16108. The documentation (the box at the top of the "Scripting in Python" page, https://simtk-confluence.stanford.edu:8 ... +in+Python) says that "Python version 3.8 is supported for OpenSim version 4.3+."

[Mazen Al Borno]

Just debugged this issue on a student's computer. Adding these lines worked in his case:

import os
os.add_dll_directory("C:/OpenSim 4.4/bin")