Recently purchased autocad lt 2008 . Having a problem with the program locking up when in a move command or other features. When in model space the drawing window becomes inactive. You can move the mouse cursor through the window from top toolbars around the drawing window to where it is active through model space(where inactive) and have it reappear to the bottom toobars.It will finally shutdown with the recovery feature possible. The following auto cad lt dialog box appears and says: unhandled exception violation reading ox05cc exception at 4ce947h. Not long after that a microsoft visual c++ runtime library box will appear. Is their a fix for the problem? Have already installed service pack 1.Please help!! Thanks in advance.