USB Loader GX Blackscreen when launching a game [Fixed]

[wraith stone]

Hello!
Just fixed a issue with my USB and I am able to launch games from USB Loader GX
It worked the first time (Wii Sports) but then I tried again but that time I got a blackscreen when launching the game with my Wii Controller disconnected.
I tried several things but none worked.
I also tried WiiFlow but when I launch a game there it literally infinitly has that one WiiFlow loading screen at the beggining with (again) my controller disconnected.
Both times I need to turn off my Wii and turn it back on.
Anyone knows why and any solutions?

[karmic flax]

check the USB Devices Compatibility List

[wraith stone]

It works
It shows the games and at the first time it launched
But then at the second time black screen

I already checked that too it should be valid

Fixed problem by deleting save file and/or redownloading via backup manager