Creature meshes disappear randomly/when animations start

[Numinas]

Hi lovely people from loverslab

 

 

I'm getting this bug that i can't sort out by myself.

Creatures in my game disappear randomly, and they get replaced by a red box that has an exclamation mark inside.

this happens when they are idle, move around, start an animation. 

i already figured out that the game is missing something, but i don't know what. 

here's my modlist and a screenshot of the problem.

i have marked all the Mods related to SL and to Creatures.

 

 

thanks in advance for any help. ❤️