Can you please post how were you able to get it to work, I try twilight menu on DSI XL, but only get white screen
I'm in the same boat. I tried to load both Twinkle Star Sprites and Pulstar, and they freeze at "Loading banks into main ram..." They are in the correct .neo format, and they are at the root of my SD card.
See if by changing version you manage to launch your games, I put the four versions of NeoDS in this pack:
Otherwise ask here, I think you will find the answers to your questions