Do you mean your are unable to download Themes for these?
Please ensure you are connected to Internet before trying that.
I have tried again no go . when i try it comes up blank in the Themes .Pse11 works fine ,but i only have a trial version.Pse10 was a trial version i bought larst year.
Please try renaming last folders mentioned in hierarchy:
C:\Users\<username>\AppData\Roaming\Adobe\Online Services\Photoshop Elements 10.0.0
and right click on PhotoshopElementsOrganizer.exe located at: C:\Program Files (x86)\Adobe\Elements 10 Organizer and select 'Run as Admin'.