On my girlfriend's Cyclo, NESDS loads fine. On mine, white screens on startup. Both are running fw 1.55 beta 3 Hers is a 2gb microsd, I have 8gb microsd. However, NESDS ran fine for me a few weeks ago.... For some reason it works when I pull out my 3-in-1. Weird. Reinserting it after the program starts resets my DS!