Photoshop Elements 13 Organiser fails to start

Recently, Elements Organiser would not load after working properly since installation a couple of years ago.  I followed the troubleshooting steps at Elements Organizer crashes at launch.  The Catalog Manager would not start either.  When I ran Organiser direct from the Program folder with Administrator rights, it showed that one of the DLLs was corrupt.  I copied it from a backup installation on a second PC, but still no luck.  Another Administrator attempt showed a second DLL also corrupt.  Copying that as well fixed the problem.  The DLLs in question are libeay32.dll and ssleay32.dll in the Organiser Program folder.  Both were showing as 0KB in File Explorer.

Does anyone know what might have caused this problem?