Is the VIdeo Stablilizer issue the only issue that you are now experiencing with your Premiere Elements 9.0/9.0.1 Windows?
For starters, you could delete the preferences file and determine if that has any influence on the problem. You would need to delete the Adobe Premiere Elements Prefs file found (if Windows 7 or 8 64 bit) in the path:
Local Disk C
Premiere Elements Folder
and in the 9.0 Folder you should find the Adobe Premiere Elements Prefs file that you delete.
In order to see this complete path, make sure that you are working with Folder Options/Show Hidden, Files and Folder On.
If that does not work, you might want to do a complete and clean Deactivate via Help Menu/Deactivate, followed by uninstall (Control Panel) and reinstall with your installation disc or files.
Please let us know the outcome.