Certain files will not print in AutoCAD MEP 2011.
When I save them as 2007 I can print from 2007 just fine.
Other 2011 drawings print fine.
I have already tried recover, purge, audit, purge, audit.
It just gets stuck and uses the whole processor core and I have to ctrl-alt-delete out.
I never know when it is going to happen so I end up losing a lot of work.
Any ideas about how to fix?