I may have screwed something up on my system.  Here is what I did.  I have an addiin I created 3-4 years ago.  The entire dept uses it and its located on a network drive.  I copied this folder and put it on my local drive so I could modify it without affecting other users.  I unregisted the one on the network drive (the current addin) and registered the one that I copied to my local drive.  The local addin showed up when restarting SolidWorks.  Now I tried to reverse the process, unregistered the one on my local drive then tried to register the unmodified one on the network.

I get this error  "Either the Add-in or one of its components is missing"

Any ideas what may be causing this?