What exactly happens when you select a thumbnail and click on the editor button at the bottom of the Organizer?
Is the Editors window simply blank or does the application shut down? Any error message?
Are you using jpegs or some other type of file?
The editor opens but the image does not open and it happens with all file types. I am running windows 8 but without a touch screen.
I dowloaded a trial version of CS6 and the organiser opens this and also opens the image in it irrespective of file type.
Try re-setting the Editor prefs by going to:
Edit >> Preferences >> General
Click the button to reset the preferences on next launch. Then close the Editor and open it again.
If that makes no difference you may need to uninstall via the control panel and re-install the PSE11 software again.
On Win8 machine,right click 'PhotoshopElementsEditor.exe' and select 'Properties' and click on 'Compatibility' tab. Under 'Compatibility mode pane', click on check box for 'Run this program in compatibility mode for' and select 'Windows XP (Service Pack 3) from drop down.