Having PROBLEMS with MM 2.1 that I never have had before

 When I try to burn to a DVD "Movie Maker cannot create the DVD because an error occurred" I have a Windows XP Media Center Edition 2005-based computer

Now I tried to troubleshoot on Microsofts pages and found this:

"This problem occurs if the following conditions are true:
• You use Fast User Switching to change user accounts before you try to burn the DVD.
• The account that you switched to does not have sufficient permissions to use the DVD burn engine that is USED by Windows Movie Maker. To burn a DVD, the user account must have administrator permissions.


To work around this problem, log on to an account that has administrator permissions before you try to burn a DVD"

Well I am the administrator of the computer, AND it also gives me this message when I try and save to some other format

"Microsoft Visual C++

Runtime Error!

Program: C:\Program Files\Movie Maker\moviemk.exe

This application has requested the Runtime to terminate it in an UNUSUAL way.
Please contact the application's SUPPORT team for more information."


Not only that, but when I save it to my computer (that's the only option that will go through) it will get stuck on a picture and continue to play music, but the rest of the movie was never saved.

This is my fiance's gradution video, HELP