NTSC DV -> PAL DVD problem

[AWingfield]

Ok, I've created a PAL DVD with videos of captured TV shows and some homemade DV videos. The captured TV shows that I converted and put on the DVD work fine. The DV videos however, do not. I don't have the DVD, as I sent it to my friend overseas, but he tells me that as soon as he selects one of the DV clips from the menu, it plays like <1sec and returns to the main menu. The only difference between the different videos is that the ones I captured are at a lower resolution, 352:288 and the DV ones are at 704:576. I converted all of them to PAL using TMPGEnc and burned them on HP DVD200e using Sonic MyDVD. Why won't it play the DV clips? Those are pretty much the reason I created the DVD, the captured TV shows were just extras to take up space.

Thanks,
Andrew

[DJRumpy]

Your sure the framerate, and resolutions are correct for the region on the 'bad' clips?