I am running BootMii + Homebrew Channel from a 4GiB FAT16 partition on a 32GiB SD card. The other space on the card is a WBFS partition with plenty of valid games. When I launch USB Launcher GX, it waits for a USB connection for 20 seconds and then tells me that no USB devices were detected. It will not detect the WBFS partition on the SD card.

I have tried successfully to get the same games on the same partition launched via Configurable USB Launcher. I would prefer to use GX, though. Does anyone have experience or know-how regarding this issue?