Vanishing Point on a new Dreamcast

I downloaded Vanishing Point a few months ago, I have play it with out any
problem. Until now, I bought a new Dreamcast last week, and I can't get it
to load. It just freezes on the loading screen, I have tried coping it a
slower speed, on different disc, all with the same result. Is there any
differences between the newer models and the old ones. Is there a patch
available ??
Any help would be welcome.

Sid