I am having a problem with the undo command. If I don't have ArcGIS for AutoCAD Build 300 loaded, the undo command functions properly. However, if I have build 300 loaded - the undo command will only work to undo zoom commands. Is there a setting that I need to change on the ArcGIS toolbar or within AutoCAD itself to make the undo command function properly? Or is this a glitch? I never had this problem with Build 250. I am using AutoCAD Map 3D 2011.