I’m just adding my two cents since I don’t work with the UPF, but I can tell you that the .lock file is always an empty file. It’s presence is just used to indicate whether the previous Ansys session ended abnormally, in which case it would produce the error you pasted. You can just type “y” to override the previous lock and continue launching Ansys. Or just delete the .lock file before launching Ansys, and it will launch normally, without any recognition of the previous abrupt exit.
Is there anything relevant to the crash left in the .err file?
You are navigating away from the AIS Discovery experience