Hacking Problems with Level 5 Premium platinum demo on R4.

[Conor]

I can't seem to get it working on my R4. (Not a clone, it's the original one.) It loads the menu but if I try and play any of the games it freezes on a white screen.
Anyone know what to do?

btw:
Flashcart: R4DS
DS: Phat
MicroSD: 1GB
Rom size: 256mb
Firmware: latest YSmenu with unofficial DSTT kernel.

Help appreciated,
Conor