Vista - publishing dvr-ms files

I am using Vista Ultimate 32bit edition and while I can import and edit my
Media Center recorded content into Movie Maker, I can't publish the finished
piece. I get as far as being able to give the movie a title and then the
screen which tells me the estimated time when the message "Windows Movie
Maker has stopped working" then "Movie Maker is restarting".

Movie Maker itself doesn't hang or lock up entirely, but will not publish my
edited dvr-ms files. Is there anything that can be done to remedy this
issue??
Can anyone please help??