Mega Man Maverick Hunter X

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so i have tried many downloads of mega man maverick x for the psp and so far out of all the downloads i have tried only the cool rom us and Europe download will work and by work i mean start up and then immediately freeze on the accessing screen. i have tried pressing start and that has not helped at all idk if this issue is closed but if there is someone out there that can help me fix this issue i would really appreciate it thanks in advance also i'm using open emu on my mac if that helps at all