I currently use a DVD for Rock Band 2, as I could not get the DLC to backup to the SD card properly when using a USB Loader. Now that I tried to use some of the GH5 DLC, I'm getting a different problem. Whenever I've booted from the USB Loader, it says that it cannot detect an SD card. Is there any work-around to this, or will I need to simply deal with the long load times of a real disc in order to use DLC on my SD card?