[MDL ED] How can i fix the skeleton?

[Casotime1999]

No I did it in the past but it was the beta patch 131111 and i reinstalled amnesia, now the problem is different. I've saved the model in model editor and Amnesia gives me this huge mesh error, I've understood what the error is: Animation and skeleton of the monster. Because I'll crash when I move the mouse. I can use scripts and level editor but I can't use the editor, I'd like to learn this. Pls help me. This is my first error of models