Unable to open files from 3Dexperience workspace.

Last Tuesday (16.08.) out of nowhere after a non-working weekend, I wasn't able to open most of the files from my 3Dexperience workspace. It's usually some complex(ish) assemblies, and parts associated with them. Everything was working fine weekend before. SW2022 SP3.1 and 3DEXPERIENCE R2022x HotFix 3.6.