I have a similar problem with Ike. I asked if anyone could help me so Ike could be use again, but alas, no one actually helped with the problem.
I guess these kinds of questions are things no one really knows how to fix, sadly enough. If I had to blame something, it would probably be the Clone Engine, seeing as I got some Ike rels a long time ago and now Ike is the only character that doesn't work for me, even though I removed them.
I can't really help with this problem either... I would if I knew the problem. Sorry.