Rhythm heaven fever problem and last story pal

Hey all i never had a problem playing wii games on usb loader gx but when i get past the testing part of rhythm heaven fever it gives me a black screen and i can't move on and for last story when i force pal 50 or 60 it gives me a black screen or an error. Maybe i need to install something like a cios? I'll appreciate any help :D

anyone? :[

For last story i think it is an ios problem because if I boot it with ios 222 it just gives me a black screen and if i boot it with 249 it gives me and error has occured