White Screen upon loading homebrew (M3)

Hey.
Sorry if this has been answered already, but I am trying to get some basic homebrew code working. I downloaded the demo1 application from http://www.double.co.nz/nintendo_ds/, managed to compile it and run it under an emulator, but when I transfer the file to my DS, (I am using an M3 miniSD w/ passcard) I only get a white screen. I have tried both the game loader the M3 came with, and just transfering it straight to the card.
Any suggestions?

Thanks
-Joe

did you try loading with the a button or start button.

Thanks for the response.

I tried both, with the same results, so I'm pretty sure that isn't the problem.

Now you've got me curious. Whats the difference between starting it as a demo, as opposed to as a game?

-Joe

what is the file extention

Its a .nds file

No one has a solution to this?

Try loading through Moonshell I guess. It works with WinDS on my Supercard MiniSD at least, since the regular Supercard menu gives me a white screen when booting it.