I recently put a fresh copy of Catalina 10.15 on my Mac Mini (wiped and started from scratch). I ran the 'free' copy of PM6 then when the time was almost up, I purchased a license. Since registering the software I have had a few issues.
1) When ingesting a card, the thumbnails become 'frozen'. Clicking on them or trying to move them results in nothing. Everything else - i.e. left window - seems to work fine. The fix is to close down the contact sheet then re-open it. It then works fine.
2) Our process is to ingest all the files (maybe a few hundred at a time) then move them to separate folders. By highlighting and dragging a number of the files, the hovering over the file folder under 'Favorites', pausing for a second should cause the nested folder to open. Randomly and intermittently nothing happens. I have waited up to 30 seconds, nothing. Sometimes it works, sometimes it does not. The only fix I have found is to manually open each nested folder.
3) Intermittently I see the problem in the attached photo (sorry about size) - they are all jpegs. Again, shutting down the contact sheet and re-open solves the issue.
Now, I know this has nothing to do with the registration - but do any of these sound familiar? I just installed 6.0 Build 3954.
Kevin