The PSE 9 Organizer won't start - the error message is below. The PSE 9 Editor starts with no problem.
This is the first time I attempted to use PSE 9 after restoring images. PSE 9 lives on the C: drive; my catalog and images are on the I: drive. The original I: drive was defective; I replaced it and restored the files. I'm running Win10.
How did you restore? Only a full backup from the organizer followed by a restore by the organizer can ensure both the restoration of the photo files AND the links to the new drive. Any other external backup solution can't restore the links and you would have got a 'disconnected' files warning.
The error message you get is trickier.
First try to keep the shift key pressed when lauching the organizer, you should get a contextual menu offering to repair the catalog or to start with a new empty catalog.