Problem Time Render Game (Nightmare) Playing With Nils

Question

I’m using the Unity 3D versão 5.0.2. I’m going in "Build Settings..."to render my game (Nightmare Project).
But it seems to me you can’t send your enemies' artificial intelligence.

After rendering, this error is at the bottom of the Unity 3D

And when I start the game executable appears this:

Another problem I’m having is with the shot coming out black:

This is the Gunbarrelend configuration screen:

Particle system:

Thank you :)