I recently got a new external hard drive, and had attempted to upload my files into Lightroom. Lightroom froze, so I had to "Force Quit" it. I have updated all of my Adobe Creative Cloud functionality, and now, every time I attempt to open Lightroom, I get the attached error message. There is no other different catalog to choose from, and when I hit continue, it just keeps popping up with the same message. I really need to get some work done, so does anyone have any advice on remedying this problem?
Are you referring to Lightroom Classic (desktop-based) or Lightroom (cloud-based)?
I suggest proeprly disconnecting all external drives, quiting applications, and restarting your computer without the externals attached. Hopefully, Lightroom will launch properly and then reattach the external.