EDIT : As of today, Nintendont has pushed a new release that fixed this issue. You can now update safely to the latest version of the loader and use HID usb controller adapter on your vWii.
1. Unplug any USB controller adapter during booting your gamecube inject (or Nintendont forwarder) and only re-plug it only after your game has started
2. Download the latest loader.dol that is reported to work with USB controller adapter plugged in on startup.
Replace your existing boot.dol file after renaming it in your root/app/nintendont folder on your SD card.
WARNING : Using TeconMoon's Wii VC Injector, do not use "Download Latest Nintendont from GitHub" feature as it will erase your working version
For those interested in knowing more, there already are issues and PR adressing the problem : https://github.com/FIX94/Nintendont/issues/712
Maybe @FIX94 will fix that one day. But, as of right now, there has not been any further development of Nintendont in a year. So this method is the only way to work around that problem for now.
Last edited by Mamothstard,