I have tried everything from restarting the program and having an update. Everytime I am trying to save a project in a PDF. or just simply go to the plot layout it won't let me and the program just shuts down. I had 2011 for MAC and it worked fine. I went abroad and tried using autocad and it just stopped working. I am back in the states now and have had nothing but troubles since uploading 2012 autocad mac version. Any suggestions?