darthmunky, the problem resides in pixel resolution not matching from cfg. file default settings to your monitor/screen/etc..
i have been using usb-loader gx for some time on the wii now, buttons and many others seem like there not there, yet they are,
also been using this loader for most of my modding purposes, usb-loader gx is really great but still has many many problems and bugs i have
came across many over the years and such also i have came across memory card emulation bugs for the gamecube using nintendont-*full*-setting,
sometimes they work sometimes they don't, when they don't best just to restart it, only luck i have had but for the most part, usb-loader gx is by far the best..
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and yes im sorry to all if this reply is like super late lol please be kind guys just trying to clear some known issues and possibly they will update the usb-loader gx
program/app for the wii modded, but its only guys like us that wont know until we try it ya know?..