Quote - This update forced me to reinstall Poser from scratch... somehow one of the XML files got corrupted and it doesn't say which one.

This really should not happen. Was your Runtime/heads/knownFaceRoomHeads.xml modified in any way? Most likely that's the file that caused you trouble. Please contact tech support via http://www.e-frontier.com/go/emailtech and send them your broken version of that file (if you still have it, if not please explain whether or not your version of that file was likely to be modified).