So I guess, it's not the setting. Can someone test, whether card creation works with F-Zero AX?
But the normal MC emulation works for GC games. I could save without problems. Is it possible to write the Triforce savagame to my SD card instead?
I have to correct myself. Some demos do start, but hang afterwards. In Interactive Multi-Game Demo Disc Version 13 (not yet on the wiki, should add it after more testing!) the Mario RPG Demo starts, but hangs in the first fight. Other game demos (in other demo discs aswell) only get to the Nintendo Logo and hang afterwards (nearly all Mario Sunshine demos!).
Since I own a GC and a Wii with plenty of games, I decided to try some stuff, I couldn't try with them "normally", like the triforce games and/or the demos, which were never released for public. I guess, there is still a lot interesting stuff hidden inside 'em!