Eek! Upgrading to this from 3.8.1 keygen version everything looked fine, but now, users sending a PM get: Fatal error: Class 'vB_DataManager_pm' not found in path-to-my-forum/includes/functions.php on line 135 Tried dropping in the old functions.php just in case, but nope. Same story. I did make a backup and can roll back, but I'd much prefer to fix it. Any suggestions?