YSMenu Help!

I have a R4i ultra and i cant seem to get ysmenu working on it. I run it from the filebrowser fine, it works, but as soon as i try to run a game, it says unsupported DLDI name. Does anyone know the fix for this? Thank you.

download akaio 1.8.1 for r4 ultra: http://www.r4ultra.com/download/AKAIO_1.8.1.R4U.rar