DSLite rom issue..

I recently bought a dslite and the max media dock since I didn't know any better at the time.
I also bought a Ridata 2gb compact flash card. I hooked everything up and even updated the software for the media dock. I've loaded some nds roms on the flash card but nothing seems to work when I double click them. The turn red and the system seems to do nothing. I created a games folder and I can go into it but it wont back out of the folder per the little "back" icon. I've started reading this site and I have found a post from someone who had success with the datel media dock for the dslite.
Why wont the nds roms run?

Thanks :)