Hi @marios,
Thanks for the post and the heads up to the rest of the community. That is pretty strange that 3.8.2 works but not any of the later bug fixes. We bumped a few library versions like Pandas and our internal TaskGraph but not Python.
We have another user with the same issue over at this thread: I can not start Invest.
Could you look through that dialogue and see if any of those suggested troubleshoots work?
Unfortunately Windows stopped supporting Windows 7 in January of this year so we don’t actively test our builds on it.
Best,
Doug