my game doesnt open :c

Action, survival, exploration,zombie shooter, 3rd person game. Game works fine. Needs gameplay improvements.

so every time i try to run the game i get this error message
Unhandled exception encountered:
System.IO.FileNotFoundException: The specified module could not be found. (Exception from HRESULT: 0x8007007E)
at Kerberos.FortZombie.EngineModule..ctor()
at Kerberos.FortZombie.FortZombieEngineModuleFactory.CreateEngineModule(TopScores scores)
at Kerberos.FortZombie.Client.Application.AddModule()
at Kerberos.FortZombie.Client.Application.Initialise()
at Xen.XNALogic.Initialize()
at Xen.XNAGameAppWrapper.Initialize()
at Microsoft.Xna.Framework.Game.Run()
at Xen.XNAGameAppWrapper.Xen.IXNAAppWrapper.Run()
at Xen.Application.Run()
at Kerberos.FortZombie.Client.Program.Main(String[] args)
i have no clue what any of this means, can i get a hand?

Appreciate it.