>do you mean that you invited a super user to use Clef?
yes,
1. after I had the parsing error went away
2. the menu item on the LHS of WP indicating plug-in not set up properly went away
Mine was on a site which was using Clef, then stopped letting me in.
The only way to get back into the site, was to log into another WP site of mine also using CLef, which then allowed me to get in and have a look at the plug-in which may have been auto-updated by wordshell.