I also had some trouble, at first. But then I changed the axis order in the joint editor, changed it back, and everything worked nicely. I don't want to show my current weight maps because they're still in their awkward phase, but I assure you they exist.

Yes, I think the channels were probably deleted. I can check in the CR2 if anyone needs to know. :-)

-- I'm not mad at you, just Westphalian.