My company recieves drawings from customers that are created in AutoCAD 2011. We are still using AutoCAD Mechanical 2010. Normally, the users can double click the drawings out of their emails and the drawings will open up in the regular AutoCAD 2010, which is what they want to heppen. For some reason now, the drawings are by default opening up in Mechanical and we get an error that the file was created in an incompatible version and cannot be saved. Note: they display just fine, you just cannot save any work done on them. If they save the file to their desktops, open regular AutoCAD, navigate to the drawing, they are fine and can make any modification and save until they are blue in the face. Unfortunatly, the latter method really disrupts their work flow and they need to just be able to double click the file directly out of email. Another note: When they do double click the DWG files to open them, you can see briefly that standard AutoCAD starts but then Mechanical takes over and it errors out as I stated above. I really need to come up with a resolution to this as soon as possible, both for them and my sanity. Any information on disabling the Mechanical aspects of the program so it cannot be used at all is most welcome.
Maybe you can first open a regular AutoCAD 2010 and then try to double click the drawing from email or other places.