i second this one tyris it breaks the game and my load can not do with out a nanite factory

Yepp, same here! Here's a log excerpt:

Exception occured: System.NullReferenceException: Object reference not set to an instance of an object.
at NaniteConstructionSystem.NaniteConstructionManager.InitializeControls()
at NaniteConstructionSystem.NaniteConstructionManager.Initialize()
at NaniteConstructionSystem.NaniteConstructionManager.UpdateBeforeSimulation()
at Sandbox.Game.World.MySession.UpdateComponents()
at Sandbox.Game.World.MySession.Update(MyTimeSpan updateTime)
at Sandbox.MySandboxGame.Update()
at Sandbox.Engine.Platform.Game.UpdateInternal()
at Sandbox.Engine.Platform.Game.RunSingleFrame()
at Sandbox.Engine.Platform.FixedLoop.<>c__DisplayClass1.<Run>b__0()
at Sandbox.Engine.Platform.GenericLoop.Run(VoidAction tickCallback)
at Sandbox.Engine.Platform.Game.RunLoop()
at Sandbox.MySandboxGame.Run(Boolean customRenderLoop, Action disposeSplashScreen)
at SpaceEngineers.MyProgram.Main(String[] args)

i can load my game without the nanite factory but what im working on is going to look weird without it

Yeah, again, same here. I've removed my Nanite Factory for the time being, will rebuild it once it's working again. Experienced another crash though after playing for some time now, maybe related to Automated Shipyards mod...

This also occurs with my game. My log looks the same as well.

The .602 update live just now apparently fixes this.

yeah the game devs fixed the problem with the compatibilty with the new game version how super is that.

Please update, its the one of 7 Wonders of Space Engineers !

Please try to read up to the comments before posting, there's a new release which is maintained;
steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=219757726

edit; changed link