I was stupid enough to simply follow a guide to describe how to create a usb loader, and create wads so that games will show up as wiiware channel (using Loadstructor-1.7+cLoader-1.6). It worked well with a few games, but then I added a wad for another game (I know exactly which one), which bricked the wii and doesnt let the menu system load.
I installed bootmii as ios, created a nand backup (didn't know it's useless w/o priiloader or cboot2) and installed cIOS38_rev14
No I dont have mario kart channel.
This is I'm able to boot games with the GC controller (SaveMiiFree). It just won't boot AnyTitleDeleter.