I have searched the forums for commands stop working and have found nothing that helps me with my problem. as my signature says, I am running AutoCAD 2005 and I can be working in a drawing an all of the sudden when a command is typed in, AutoCAD does nothing, no errors, no messages on the commandline, no nothing. One thread suggested using (reload "acad") but AutoCAD returns a message unknown command "reload". Any help would be greatly appreciated. If we exit out of cad and come back in, the commands work fine for a while.