I've tried wiiflow, GX loader, cfg loader and all show that no games found. I've copied the game folder manually and not via backup manager as i have a security product on my laptop that is now allowing to copy files to usb (but manual copy works fine) I've formatted a usb thumb drive (sandisk cruzer 16GB) to FAT32 cluster size 32k and created a wbfs folder and copied a folder of a game with a wbfs file in it.
I have various apps on sd card and i can load them in wii. I've soft-moded my wii and added the homebrew channel according to some guide.