A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
If the user is using 2007 both places, why do you think it's compatibility issues?
Are you able to save the file at all? Maybe try Save As and see if you can save it under a different name.
Once you get the file closed, then reopen PPT and go to Office Button | PPT Options | Resources. Run Office Diagnostics there.
In addition, make sure you have a local printer driver installed and set as the default printer. Sounds weird, I know, but it really might fix the issue. Here's info on what to do:http://www.pptfaq.com/FAQ00952.htm
Finally, it could be a conflicting add-in. If you go to Office Button | PPT Options | Add-ins, what is listed there?
(We've had two posts about this error message in the past few hours. I wonder if a Windows or Office update has caused problems?)
-- Echo [MS PPT MVP] http://www.echosvoice.com