[SOLVED]Studio crashes every time I select a custom rig while having Animator plugin open

Every time I go to animate a custom rig and select it, studio crashes. But when I select something like a dummy it doesn’t crash

Here is the custom rig:
image
image

At first the animater opened with no bugs, but when I rotated the “HumanoidRootPart” to get it standing up (Yes, I did re-do the joint that broke because I rotated it.) When I went to go re-open the animater because I had to rotate the “HumanoidRootPart,” studio crashed, and has done so ever since.