It says here that they're still working on Vista compatibility.

I saw a mention of ASPI driver issues too. They suggest you make sure you select
to install ASPI support when you install Dance. Maybe you'll get lucky and that will
do some good.

That's the number one problem with Vista right now. It breaks a lot of software
that worked fine before and driver support is still way behind because MS is trying
to force everyone to sign up with their exclusive program, which apparently costs
thousands of dollars as well as adding months of delays to development. That's
even more expensive when you have people on the payroll.

If you can, I suggest you stick with XP for at least another year.
Vista's not ready for the pros yet.