Hello, I have the same problem several months ago, and Autodesk offers no solutions beyond -EXPORTTOAUTOCAD command!. The real solution is to format the entire hard disk and install ONLY Autocad, then install everything that is normally installed, MSOffice Photoshop, etc etc ... I personally find it a scam especially if the version for Mac was purchased. I am using Autocad a long time ago but I'm migrating to other solutions such as Microstation. Thanks to Autodesk solutions for useless as badgets and most beautiful icons. For years creep problems have not been willing to resolve, I was a beta tester, you know what I mean. It's amazing that after paying $ 5,000 even have to pay additional $ 40 third parties to edit multiple sheetsets.