Hello and thanks for reading my post.
I have been running into an issue that I hope someone could shed some light on. It seems that the rig that comes with characters out of CC3 are not compatible with a lot of animations that are used in Unity. I have tried to use several animations from the Unity asset store and every time I go to set the animation as "Humanoid" and select the Avatar Definition that comes out of CC3 with my character, I get errors. The most common error regards some kind of mismatch and "hips" being missing. Sorry if this isn't clear; but, I am not in front of Unity at the moment. 

Has anyone else found that they constantly run into issues when using animations from the asset store with the CC3 character? The only animations that I have been able to use in my project are the ones from Mixamo. But, that is only after I retarget the animations to use the Mixamo rig and not the one that comes out of CC3.

Has anyone else encountered this? Does Reallusion know/care about this? Does anyone know what the root problem is and if there are any workarounds?

Thanks in advance.