backup catalog in PSE14 for MAC

I TO EVERY BODY . TRYING THE FUNCTION : RESTORE CATALOG , I DISCOVER  IT DOERSN'T RUN !!

THE FOLLOWING MESSAGE APPEARS : THE DISK IN DRIVE xxxxxx DOESN'T CONTAIN A VALID BACKUP !

CAN ANYBODY HELP ME ?

THANKS A LOT !!

ALBERTO PAGNI

pagni.albertogmail.com

+393357428391