WHAT IS THIS, AND WHY DID WE GET THIS MESSAGE WHEN TRYING TO UPDATE A DIMENSION

We used to get this error all of the time when we would back save an AutoCAD 2007 or 2008 file as a 2004 file type.  If that is what is happening to you you have to go Autodesk's website and download the patch.  If you are running AutoCAD 2004, then here is the link:http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=7047389&linkID=9240618Try this out.  I hope it helps.