Wiiflow not booting and redirecting to system menu

Hello,
Wiiflow was working just fine, and it no longer is.
What happened is that I downloaded not64 to emulate Nintendo 64 games, along with ~50 games.
I tried one of the games (Banjo-Kazooie), and it worked just fine, launching from Wiiflow.
When I exited from the emulator however, it redirected me to the wii system menu.
Now when I am launching wiiflow, there is the initial wiiflow load screen, and then it crashes and loads the wii system menu.
Any idea please?
Thx,
David

 

I must add elements.
If I use priiloader to boot on USB loader GX then my wii won’t start, it is stuck with a black screen.
From priiloader I can launch the system menu and from there Homebrew or usb loader gx. If I launch usb loader gx in this way, it works. If I launch Wiiflow through Homebrew then I get the same crash getting back to system menu....
I also removed a file in sd:/roms/mupen64.z64 due to wrong manipulation (from memory)...