Program started bringing up an error message on startup about being unable to open a catalog as it was open in another instance of Lightroom. Support couldn't get rid of it, so I uninstalled and reinstalled, but now it won't start at all.
If I check in task manager, there's a Lightroom process running, but nothing in actual programs. Shutting that down and trying to restart it just takes it back to the same - a process but no program and no window open.
I can't get the exact wording now as it simply won't start at all now. It was very close to: 'Unable to open catalog as it is already open in another program. Please close the earlier instance of Lightroom, open another catalog or exit'