Hello, I'm having a problem with my autocad and I don't know what to do to solve it. I have the 2011 educational version and here's whats happening: I can work normally and do everything; all the commands execute and it's all right, but when it comes to saving the file, wheter if i write cmd+s or I select the direct option file + save, the program closes and the file doesn't get saved. What can I do? I apreciatte your responses! Thank you. Maria.