I have not found an answer for this most frustrating error. I can't save a stinking file. I'm using 2010, so it appers to be happening across multiple Autodesk platforms. IF anyone at Autodesk has an answer (not a "try this") please share, thanks.
You might try starting your own thread with more detail instead of tagging on to an old thread from 2007. Include you system specs and an screen capture of the error. What coomads you were using and what you were doing help find answers quicker.