A Rom isn'y Working...

I Downloaded 4215 - Kingdom Hearts 358-2 Days (U)(Xenophobia) and when i use it on my DS After I Select What Mode I Want, It Just Either Freezes Or Just Won't Work.
It Just Stay's as a Black Screen, I Don't Get it.Any Help Would Be Appreciated.Seth ;)

Take a look in this topic.
https://www.romulation.org/forum/index.php?topic=29845.0