Your save setting is to an earlier version of ACA, probably 2004 or earlier.
You can't save AEC09 objects earlier than AEC07. Change your save options.
wrote in message news:6173104@discussion.autodesk.com...
I am using AutoCad 2009 Student Version. I have not imported anything or
done anything strange. I keep getting this error message "One or more
objects in this drawings cannot be saved to the specified format.The
operation was not completed and no file was created". I get this message
even after I open up the drawing and immediately try to save it again. This
is driving me crazy! Please help if you have any suggestions or know how to
resolve this issue.