Uhmmm. Upgraded to 6.4.4, though I'm not positive that this is when we started having trouble, but when users change their display name and hit "submit," it doesn't take and displays "SQL ERROR: Database error only visible to forum administrators."
Board in question:
http://bmwsporttouring.com/ubbthreads/ubbthreads.php?Cat=Any ideas where I should start looking? Thanks! <img src="https://www.ubbcentral.com/boards/images/graemlins/smirk.gif" alt="" />