Been burning AVI to DVD no problem but mpg

I have been converting AVI to VOB with BlindWrite’a application no issue. I have PowerDVD XP and those burned DVDs will start right up when inserted.

But this time I converted a mpg to VOB. PowerDVD said, “Unsupported Format.” Well I took the DVD to a player we have not computer related and the DVD played perfectly.

Question what is wrong? Is PowerDVD XP lame should I use a different one? If so which one? Thanks.