I've been using Pre14 video editor like crazy for the last few days with no issues whatsoever. Today, when I launch 14, and click on the video editor to open, it tries to open (a small icon appears in my dock) and then immediately closes. The photo editor and organizer both open fine. No changes to my system since yesterday, when I was using the video editor! On a 2015 MBP fully tricked out! I've restarted my system, etc.
Thanks!
Don in Chicago