Please try launching Organizer with Admin rights directly from its exe (PhotoshopElementsOrganizer.exe) by right click >> Run as admin.
On XP, you will see this under Program Files \Adobe\Elements 9 Organizer\
Please goto %appdata%\adobe\elements organizer\9.0\organizer and delete the files psa.prf ans status.dat
Try launching Organizer with admin rights but this time keep Shift key pressed so that Catalog Manager dialog is launched.
Its possible that somehow the catalog you were last working on, has some issues. Try catalog repair and optimize for that catalog through catalog manager dialog.
Please refer to blog: http://tinyurl.com/afrvtk3.
This blog is aimed at PSE11 and win vista and later. But it will work fine after replacing PSE version numbers/OS appropriately. let me know if you face any issues.