I had this problem (it seemed to load but there was no reader icon and the icons that were there said they were not loaded) so I called Pandigtal (the number on the website with the android update) and was told just to reload it, that sometimes it did not load correctly the first time. On my third try it worked!! Now the Apps are loaded and the eReader works better than ever!!
(Now I'm glad I waited for Pandigital to give us an official Android update instead of trying to hack it)