szs modifier not loading kart files

so i dumped my mkwii disk and extracted it sucsessfully but when i try to load any kart files it says it might not be compatible when it is literally a normal unmodified  .szs file. The strangest part is that it loads other files like: homeBtn.szs and tropheys BUT NOT KARTS OR TRACKS i have the latest version
edit: it opens SOME modified karts from gamebanana but still nothing from the dump.

win 10 32 bit

Huh, did you do something wrong? That could be why...

I dont think so the backup worked and the files seem ok they just dont want to load in any szs or brawlbox tools