I am moving your post from this forum (sharing and storage, deals with Photoshop.com and Revel) to the one that is related so that it can be answered promptly.
Moving this discussion to the Photoshop Elements forum.
Please uninstall PSE from your machine. After uninstalling make sure to delete following folders (last folder mentioned in hierarchy) if present:
While installing PSE10, right click on 'setup.exe' (located inside folder: PhotoshopElements) and select 'Run as Admin' and install PSE.