> Was the catalog working fine earlier?
> What exactly changes you have done on your computer which might have triggered the issue?
> Could you please check the location of the catalog and see if you have any .LOCK file. If you find any please delete the .LOCK file.
Note : By default, the catalog is stored in the Pictures folder.
> Which operating system are you using?
> When was the last time you have taken the backup of the catalog?
I had a failer with starting windows 7.
There is no .lock
Yesterday LR workt normaly.
Also the backup-file doesnt work.
Have ITo install lightroom once more?
Von meinem Windows Phone gesendet