I have tried it two times now: The release version of PhotoLab 5 crashes hard each time I try to start it.
After the first time I have removed all (as far as I could find them) traces of PL5 in my Library and the System folders. Reboot, fresh install of PL5 – no avail. Application crashes on trying to open main window. On first attempt it asked to install the Lightroom plugin. I’ve allowed that.
PB release is 12.0.1 (21A558). PL5 was downloaded on October 21, 2021 at 8 am.
Unfortunately, it looks like an exception so the crash log is not enough either. Could you please run the following script and then send me the generated package in a private message (it may contain configuration info and logs, so you wouldn’t want to post that publicly)?