Delete usbloader from sd:\apps and delete its config folder from sd:\usbloader (or something like that). Then reinstall the load to you sd card, or usb drive. Hopefully that will fix the issue. You can get the files from chapter 3 of the softmod any wii guide, if it has been a while you may want to run the wii through the whole guide from start to finish. Or get the loader from usbloader gx google site.