if your using usb loader gx go to settings --> loader settings --> and scroll down to Dm(L)+nintendont :
video mode =auto
progressive patch =off
debug = off
disc-select prompt =off
try that and see if it works
I like that games can be fixed after the fact, hate that it's being abused via beta tests... And DLC... I was a 7800 owner back in the day and loved Impossible Mission, turns out I couldn't beat it because it was actually impossible lol