The limbs of the characters are not positioned correctly or the body parts don't move properly.

This is a problem that I was not aware of recently since I can't reproduce this. The solution to this is to reset the character's 'FK & IK' Pose continue reading

Dissapearing Facial Expression Issue

You need: ShalltyUtils

This happens when you swap a character with different head mod. You can fix it by changing your character's head mod to match the one in the scene, but that is too tedious and might cause your character to look different. The method below is how to do it in studio without any need to change the head mod.

Note: You can actually do this without ShalltyUtils. By using the "Single Files". There are Load and Save there's which will affect all interpolables of the character. I just never used that so I didn't know about it before making this.

Summary: You can easily fix this by saving the keyframes for facial expression, then loading it after you change the character. continue reading

Dynamic Bone Collider Issues

If hairs, boobs, and other objects are getting dragged or messed up by something, Dynamic Bone Collider (DBC) should be the culprit. It's highly recommended to read this so you'll know how to deal in every issue caused by DBC. continue reading