Hey, i have a simillar problem with wiiflow, however, usbloader gx will still launch the games.
my thread is here: http://gbatemp.net/threads/wiiflow-wont-launch-wii-iso-from-usb.358816/
i already tried to reinstall dx10 rev52 and beta 53 on 249 and 250 with 57 and 58.
and other cios i...