Cannot open catalog after reinstalling Lightroom

[nickb50594059]

Hi!

My PC crashed requiring me to reinstall Windows and then reinstall Lightroom.  The new Lightroom did allow me to deauthorise my old PC.  But now Lightorom is unable to open my backed up Catalog saying is corrupt.  Suggests I contact Adobe for help.  So please help!

Thanks in advance, Nick

[cmgap]

Have  you tried any other  backups? Can you post the screen shot with the corrupt catalog message?

[nickb50594059]

Thanks for your response.  I discovered my backup, which was stored on a NAS was Read Only. I unticked the dialog box and hey presto the catalog opened!  Problem solved.