They now have all the fixes I've asked them to make - the first order of business is fixing the main problem, which he has now totally isolated - seems that our registered users were broken into various groups and 210 were in a group 9, which, when we switched, became problematic. Therefore, no permissions. I suspect that the 210 are all people who've posted over the years. He suggested several fixes for the problem and I told him to do whatever he thought best.