I have a 24" iMac. recently I deleted the Dropbox app as I find it a bit intrusive. Since then I cannot open LRC. The 'flash screen' appears but then LRC just closes itself. I can, I know, create a new username and work round it that way (and have done - so I know it works) but any thoughts on how to get the damn thing working again on my normal username? I'd be tickled pink if anyone had a cunning plan.
Oh! By the way, I've already tried an uninstall and reinstall. No joy.
Did you look to see if a lock file did not get deleted?
be very very careful to delete the correct file.
might be best if you have, a backup copy of your catalog.
Was dropbox integrated into your LrC workflow before you deleted it?
Looking for a .lock file will most likely not solve your problem. If there is such a file, you'll get an error saying that Lightroom cannot open the catalog because another application is using it. That is not what you describe. Begin by resetting your preferences: