{HELP} Having Trouble Building my Game!

Hi! I am working on a game named League of Arms using the FPS KIT 3.0.
I am using Unity (64bit) V5.3.4f1.

I want to test the networking with my friend but when I try to build it says:


Hope someone knows how to solve this.
Thanks in advance!

Looks like the Easyroads3D Free script sideObjectInit.cs has a reference to the UnityEditor namespace.
The UnityEditor namespace is not available at runtime.