When I attempt to access the editor in PSE9 either directly or from the organizer I get the following message:
This application has requested the Runtime to terminate it in an unusual way."
Uninstalling and reinstalling PSE9 has no effect on this error.
OK, let's see if the Event Log has more info: Start...Control Panel...Administrative Tools...Event Viewer. Expand the "Windows Logs" folder in the left panel, then select the "Application" log. Look for any items with a red icon and that refer to PhotoshopElements. Copy the error info into a message here.
OK, here it 'tis:
Faulting application name: PhotoshopElementsEditor.exe, version: 22.214.171.124, time stamp: 0x4d906921
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0x40000015
Fault offset: 0x368540bf
Faulting process id: 0x4f0
Faulting application start time: 0x01cd596402dea600
Faulting application path: C:\Program Files\Adobe\Photoshop Elements 9\PhotoshopElementsEditor.exe
Faulting module path: unknown
Report Id: 4a41b5b4-c557-11e1-aca8-001fe2015bd9
Oh, great...an "unknown" faulting module!
There's not a lot to go on, so I can only offer a couple of general troubleshooting suggestions: