Sorry for late reply,
The same situation occurred when I checked the Material Data defined already in ACP. Interestingly, the constitutive matrix can be calculated and the entire simulation process is not affected.
Once, It noticed me in Python view that "UnicodeDecodeError: 'utf-8' codec can't decode byte 0x82 in position 0: invalid start byte". And I suspect that the software is incompatible due to an operating system update to Win11.
Still dealing with this and sincerely thank you for your reply.
You are navigating away from the AIS Discovery experience