In the meantime I did following procedure: uninstalled Lightroom Classic coz I don’t use it anymore, uninstalled Photoshop Beta just to be on the safe side, and after that installed earlier versions of PS, LR, BR and CR. Everything seemed to work all right but when editing DNG-file from Lightroom in Photoshop it didn’t bring it back. Then I decided to try again, installed all the software updates again. Now I have tried to load these as much as I in short time could. It seems to work all right now. I’ll let you know if it appears again. Let me know if you still want those system infos because the problem was real.
Best
Olli K