Wii / Dolphin / Wiimms custom mario kart

[Fanes]

Hi,

It's about a custom ROM of Mario Kart with 1444 custom maps powered by Wiimms

I've try to install Wiimms Mario Kart History 2021-12
I follow step by step by using their tool

Then I tried to launch the game and I've got this error : invalid write to 0x4c000103, PC = 0x800001a1c


Does anyone have got this problem? (with Wiimms or not)?

Thanks


PS: is there a easy tutorial about this ROM?