Hi all
Had the same problem, MySims Racing not working.
Wii - LEH-
System 4.0e
cIOS36 rev 10
USB-loader
USB HD
Installed cIOS38 rev 13a and USB-Loader GX (rev554)
under settings mark "fix error 2"
And the game loads fine - if you have a gamecube controller connected, your wiimote won't work!!
