Use only standard keyboard naming!

Hi, I had a problem now with keyframing some bones in blender 2.58, but for some of the bones i got a message saying: “no suitable context info for active keying set.”
After spending some hours to try to figure out what was the problem, i figured out that it was because of the naming of some bones, which used deutsch letters like ü, ä and ö
I actually never had this problem in 2.49.

so use only standard english letters when you name you objects or bones!