Previous save folder deleted from filesystem, a month later recreated a folder with similar but not identical name. Did not realize this and right clicked folder in MM folder list and hit refresh.
Problem is really that the folder list lost sync with the file system and left a bad value.
See attached error log just in case you can dig up something useful
BUT WHILE WE ARE AT IT - THE STUPID FORUM WILL NOT ACCEPT THE ERROR LOG BECAUSE IT SAYS THE EXTENSION IS NOT ALLOWED, GEESH…