pyRevit 5.1 fails loading IronPython 2.7 on Revit 2025

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Hi!

I’m currently testing a set of scripts in pyRevit 5.1 and I noticed this error while loading IronPython:

IOError: [Errno 2] Could not load file or assembly 'IronPython, Version=2.7.12.0, Culture=neutral, PublicKeyToken=7f709c5b713576e1'. The system cannot find the file specified.

Suprisingly, this only happens in Revit 25 and works in all other versions, including 26 :smiley:

The assembly exists at the specified location and the Python engine is set to 2712 in settings:

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image651×110 5.54 KB

Thanks in advance!

2

Hi Danail.
Let’s not double post here and on the repo

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