I can't get How to Train your Dragon to work.

I am having trouble getting how to Train Your Dragon to work on my R4 card. When I click on the icon for it on my Nintendo DS Lite, a black screen comes up and says: The save data could not be accessed. Please turn the power off and reinsert the DS card. I need help! And fast!

What firmware are you using? Have you tried wood R4?
http://forum.romulation.net/index.php?topic=39701.0