Grasshopper

algorithmic modeling for Rhino

Known Issues

Compatibility with Monolith

Issue

Peregrine users may experience an error on a PC that already has Autodesk Monolith installed:

Solution exception:Unable to load DLL 'LSFORMInterface.dll': The operating system cannot run . (Exception from HRESULT: 0x800700B6)

Cause

The version of a library (libiomp5md.dll) that is installed with Monolith plugin is a number of years old and does not include functionality that is essential to the correct functioning of Peregrine.

Workaround

Without Rhino / Grasshopper or Monolith running:

  1. Go to the Monolith installation folder (likely C:\Program Files\Monolith)
  2. Locate and rename the file libiomp5md.dll (we recommend calling the file libiomp5md.dll.old or similar)
  3. In a separate explorer, go to the Peregrine plugin folder (likely C:\Program Files\Rhino 6\Plug-ins\Peregrine\plugin\win64)
  4. Locate and copy libiomp5md.dll
  5. Go back to the Monolith folder and paste in libiomp5md.dll
  6. Start Rhino and then try to run Peregrine in Grasshopper as normal

Notes

The same file (libiomp5md.dll) may be distributed with other Grasshopper plugins. The same approach can be taken to fix the issue (should it arise) in these cases. However, we recommend that you always make a backup of the original file in case it is required.

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