It never feels right to tell authors to make their plugins compatible with others, but if you're curious, it's visustella's battlecore.
As soon as it's turned on, SV actors with "$" at the beginning of their files breaks. It seems to be the only one I have that causes this.
It's a huge deal to my game, as that plugin is going to drastically determine a lot of how my game plays, but if I have to drop it, I will.
With what I know I can do with this character creator/have already done, I know that it's even more valuable, and I really think I can create something amazing with it. But having that gameplay I want on top of it would mean everything to me.