Ligthroom launch problem error "Catalog cannot be opened because another application already has it opened".

my computer turned off automatically while using lightroom aplication, , when turned on again , wanted continue work, message appeared on screen , can't use anymore.

what can do?

thank you

 

hi lizettp ,

 

with lr closed go location catalog resides(by default pictures/lightroom)

delete .lock file same name catalog.for instance in picture below lightroom4 catalog.lrat.lock

in case lightroomcatalog.lrcat.lock

 

restart lightroom

 

let know if helps

~akash

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