Thank you for that. That did it, it would seem. At least now I can load in with default settings for all my controllers.
The 2 controllers I have the biggest changes to are my Honeycomb and XBOX controller. I moved those files back into the folder in the solution in the post you listed, Steam told me the cloud and local were out of synch, and how to handle. I told it to upload local to the cloud.
That seems to be working as well. Now to try things out and see if it worked.