Moon Animator doesn't recognize lower portions of viewmodel left arm

I’m trying to animate a viewmodel that I made, but Moon Animator doesn’t recognize the lower portions of the left arm. I’ve double checked the rigging using rigEdit and the explorer, and the rigging looks correct.

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Hmmm, this seems to only be a problem with Moon. After trying it with a different animator, it worked. Hopefully Moon will fix this issue.
EDIT: No it’s not Moon’s fault, I screwed up the part1 and part 0 of the elbow…