Don't use GC backup launcher anymore, it is old and out of date. Use the latest version of NeoGamma, and d2x cIOS. The latest stable version of d2x cIOS is v8. Wiipower recommends to install d2x cIOS as follows:
IOS249 with a base of 56
IOS250 with a base of 57
This may or may not conflict with the wiihacks current guide to softmod your Wii. Double check you cIOS install before doing the above.