Oh, I see why it's not working for you. You have DSi mode set for that game.Yes, I know that. I'm already using the latest versions of TWiLight Menu++ (6.4.5) and nds-bootstrap (0.12.2).
I was just trying to figure out if it was a general issue, or just me. Because with TWLoader it worked pretty well, but I can't get it to work with TWiLight Menu++.
DSi-Enhanced games currently won't work in DSi mode.