So i made animation for my fish character in Blender. I used Rigify add-on for the rig and then did the key frames etc... Then I started to render it in Marmoset Toolbag 4, but when I played the animation in Marmoset, one vertex starts to fly around. This is odd because the animation is fine in Blender. So I tested and removed this vertex and imported it again to Marmoset, but again another single vertex starts to fly around. Both of these vertexes are in the same vertex loop at the neck area. I'd hate to rig and animate this thing again so does anyone have any ideas whats going on and how I could solve this?
Marmoset toolbag 4