I am having the same problem.
Other Level Sequences in the same project all is rendering perfectly, but one in particular Level Sequence, using the same characters, the character stays in first frame pose and the animation does not work in the render, even though it works ok in the sequencer.
I have used Take Recorder to record LiveLink from Iclone 8. I’ve been doing this for many renderings and all was ok, until now.
Any ideas?