I am reposting the following question because I thought the solution I got solved the problem, but the problem is now reoccurring:
I have a user using Office 2007 all updated. When going into the custom margins window of a table and adjusting the margin sizes there, she receives an error when hitting Save on the file: "Powerpoing found an error that it can't correct. You should save presentations, quit, and then restart Powerpoint." Hitting Save As... yields the same result when trying it as a workaround. Has anyone ever seen this behavior before? The solution was that the table objects were corrupt because when she re-created the tables they saved just fine. But this is happening again now. Thanks!