I copied all the root files from my iso to my computer, changed the files I wanted (thp and brstm only), rebuilt them with partitionbuilder, selected unencrypted data in wii scrubber to load, and then replaced the partition. When I transferred the iso to the usb drive it seemed to work great, except when I attempted to play the game usb loader froze. Is there any thing I need to do to the partition/iso to make it playable on my usb? Or is this unusual?