Hello;

        I just tried a small change in a duplicate file of a mdt drawing in the dwgeditor, then saved backwards, then I tried to open it; at first it seemed like it worked, but then it kicked me out with a fatal error. I didn't want to attempt any change in the model, just some text in the 2/d portion. Am I to understand that this application, shouldn't be used with mdt files, with there dual nature, or is there something that can be done?

      Thks, in advance for any input;

                           rob_d (2010 sp2.1)