Could not restore backup in the editor

Could not restore backup in the editor

Hi,
I'm using 6.22 SP0 Build3. I'm frequently facing a problem especially in Windows Vista where I could not restore the project backup. At first, when I open the editor, I could not see any project under the active workspace. I'm getting a error message saying "Database can't be opened : (project name)".
Then, when I tried to restore the project backup, I'm getting a pop-up message saying "Error on restoring the backup". There is nothing wrong with the backup as I can restore it in a different machine. What cud be the problem here??? SQL???
Please advice.
Thanks and regards,
Jega

This is a migrated post! Originally posted on 02.02.2009 by user jegloco. Please be aware that information can be outdated.