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My LRC App doesn't start any more.
It shows the message:
The Lightroom catalog xxxx cannot be opened because another application already has it open.
Than I choose 'Continue' or 'Exit' and it shows the next problem:
Plug-In 'Loupedeck2' performing shutdown tasks
A shutdown task for the plug-in 'Loupedeck2' became unsresponsive and may not have run to completion.
Windows 10: 21H1
Some hint how to solve?
Go to Edit> Catalog Settings> General and click on 'Show.' Delete the xxxx.lrcat.lock file and see if LrC will now open. Do not delete any other files!