Corrupted organizer in Elements 15

I have Elements 15  I cannot save edits.  When I try, the program simply goes back to the original picture,  I have received a window stating that "the requested change could not be completed because the current catalog is corrupt.  You can attempt a repair in the File- >Catalog...Dialog".  I have uninstalled and reinstalled the program...and the corrupted organizer contents are still there!  I should =d have been deleting folders from the organizer once done working on them but did not, and now the program will not let me delete the folders.  What do I do to fix this?