Vista - Burning MC recorded files

I cannot burn a DVD of media recorded from Media centre in Vista RC1.
Everything works up to the stage of selecting the file to burn ( including
reading and deleting of existing information on a DVD+RW disc). Once the
file is selected a dialogue box comes up saying something about the file
\windows\ehome\ehshell.exe. Media Centre shuts down and then restarts.

I have read in other posts that other as having no problems burning movies,
so what could be wrong with my setup ?