Vista - Playing recorded DVD's

Had a strange problem today. I have a DVD recorder, use for TV shows. I
often would make one, then copy it to the drive on my laptop to watch at
work with my XP machines. The way I did was right click, copy all the files,
the VOB files could be clicked on and it would play with WMP. Well tried it
with this Vista and it caused a huge crash. Files would not play, tried to
delete and it crashed. Restarted machine, deleted the files one at a time,
then when I tried to empty the recycle bin, another lock up. I tried several
times, tried restore, nothing would work. I finally had to format the damn
machine and set it back up. This time put the DVD in just to play, nothing,
look in my computer it shows DVD is blank, but put it in the DVD recorder
and it plays fine. Just to make sure the PC is OK, I popped in a rented DVD
movie, it comes right up and plays on WMP. So anyone know why Vista, or at
least this Vista does not like a recorded DVD, just a TV show recorded on a
blank DVD+RW disk?
Thanks.
--
Without question, the greatest invention in the history of mankind is beer.
Oh, I grant you that the wheel was also a fine invention, but the wheel does
not go nearly as well with pizza.
--Dave Barry