Vista - Cannot burn a recorded TV show in Media Center

OK, the system in question is a Dell Dimension E510
3.0Ghz cpu
1gig ram
Integrated 10/100 network
Integrated Intel 945G video (does run Glass)
Integrated Sigmatel Audio
Happauge 150MCE TV Tuner

MCE 2005 works just fine

The system is set up to dual boot into Vista-32 or Vista-64. Both are clean
installs.

Vista detects all teh hardware just fine except Vista-64 doesn't support an
added Dlink NIC

My problem is that the system records TV shows just fine, and I can play
them back just fine.

However, when I go to burn an episode to a DVD, I bring up the list of
recorded TV shows,
Right-click on the show I want to record
Select create DVD
Choose Video DVD
MCE now hangs, and never progresses to the next screen where it would
normally ask you for a title, then procede from there to the burn screen.

Bringing up the task manager shows MCE still running.

Within Windows Explorer, I can select the same file and burn the file to a
DVD with no problem.

anybody have any ideas what I should look for that might be causing MCE to
hang?

BTW, it happens in both Vista-32 and in Vista-64.