I have uLoader 2.1 and usbloader gx. After I run the uLoader 2.1, it creates a _CFG_uLoader_ entry in the WBFS ( just like a normal game entry). Then, it somehow screws up the usbloader gx. All the game entries in the usbloader gx are _CFG_uLoader_ now.
I have to delete this entry in the WBFS...