Photoshop Video Editing Program Error in 21.0.3 - HELP!!!

[RWFP]

OK, I'm a bit of a novice on PS.  I do use it for video editing and I have encountered a problem.  When I try and slide the cursor bar over the layers to move around the video clip, I now get an error.  This is new, since one of the recent upgrades.  Not sure which as I haven't used it for a couple of months.  I use CC PS and have the latest version on a reasonably new MAC running 10.15.1 MacOS Catalina).  The photos show the parts I am trying to use and the error message.  Any help would be GREATLY appreciated.

Richard, Canberra Australia

[c.pfaffenbichler]

What have you done for trouble-shooting so far? 

Restoring Preferences after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved might be a good starting point:

https://helpx.adobe.com/photoshop/kb/basic-trouble-shooting-steps.html

As for screenshots please check out 

https://community.adobe.com/t5/photoshop/faq-how-do-i-capture-and-post-a-screen-shot-or-video/td-p/3...

[PECourtejoie]

Hello, try to update to Photoshop 21.1, released today, as a fix for program error in the timeline is listed in the release notes: https://helpx.adobe.com/photoshop/kb/fixed-issues.html#photoshop-desktop-fixed-issues