It's working for me, sort of....
3rd party GCN controller - which allows all 4 d-pad buttons to be pressed at once... not sure if this is normal.
PAL Wii, 3.3E (the old 3.3), Wasabi v1 with 1.4fw. It seems to only work in port 4... and even then, when I put in a game I just get black screen. Wiimotes won't sync, 3.3 (EUR) goes away.
I've tried other controller ports, and memory cards out, and leaving the dpad buttons pressed after putting in the disc but haven't had any luck.
Here's a pic of my controller... this style of d-pad lets you push all 4 at once
ImageShack - Hosting :: img1430zu0.jpg
EDIT: I suspect that my problems may be mod chip related... Wasabi has some fancy update blocking and stuff!