Issue when editing.szs files with switch toolbox

So im tryina edit menu.szs and race.szs (mario kart 8 ui files) and i am just trying to replace ui files but if i edit menu.szs (at all even just changing the color of marios face) the game freezes with a buzzing sound and if i edit race.szs then the menu loads but when I load a track the game freezes on the loading screen (without a buzz) theese szs files are the only ones i am having problems with.
Its wiiu mk8 btw

Strange. I've made a Vancouver Velocity downscale for MK8 before, and haven't had an issue. The only mod that crashes or sends me off course (in MK8DX) is Yoshi Valley for Battle Mode.

The Mariokart World mod (for MK8 and MK8DX) crashes as well, and it just annoys me. So... I can't help you (unfortunately...) and am experiencing the same problem.

Oh ok where do i find the mario kart world mod?

It's one of my files, and to be honest, I don't want to be toasted by Nintendo (and don't want to deal with ''IT'S NOT WORRRKINNNG'' on itch.io), so I'm just going to give up and not share it. You can try for yourself, just look up an image of the MKWorld logo, do some painstakingly hard transparency editing, and give up on the tracks.