I get the intro screen but neither the "Elements" or "organiser" buttons work. Seems to have started since an option to upgrade to V11 was added to the intro screen
The best thing is to just ignore the welcome screen completely. Go into the program files [program files (x86) if you have a 64 bit system] and find the actual .exe files for the editor and/or organizer and make direct desktop shortcuts, then use those to start the program.
In case your Editor is not working on clicking Edit from welcome screen please try couple of probable solutions as mentioned below:
1. Close Elements.
2. Launch the Photoshop Elements Welcome Screen and hold down ctrl + alt + shift as you click Editor.
3. Continue to hold the keys until you see a message box asking if you want to delete Photoshop Elements settings file; click Yes. Elements will open with default preferences.
Solution 2: In case any network printer is attached try to launch without network or printer uninstall or make different printer as default.
Solution 3: Try launching with anti-virus off or removing PSE from conflicting list.
On the drive on which you have installed PSE,on my machine it is on C:
Go to C:\Program Files\Adobe\Photoshop Elements 10\Locales\<locale>\Plug-Ins\Import-Exportand you will find twain plug-in. Remove that plug-in from that location and copy it somewhere else.
Now launch PSE and check if it works.
For related post for Twain please see this:http://forums.adobe.com/message/2954743#2954743