[snip] AFAIK unchecking that box shouldn't solve any problems. So, it would seem that there was something else going wrong, but by the time it came around to rechecking the issue, the problem has "solved" itself. [/snip] You're correct, it shouldn't solve a problem. However, when I checked that box after unchecking it the error for that user occured again. So it was testable. I will take your suggestion and create a custom 500 page so that I can trap any errors.