IAP and Unity Cloud Build

Hi, I'm having problems getting Unity Cloud build to work after adding in the Unity IAP plugin. I'm using unity 5.5.0f3 I'm getting 1962: [Unity] Assets/Plugins/UnityPurchasing/script/IAPButton.cs(114,12): error CS0246: The type or namespace name `ProductCatalog' could not be found. Are you missing an assembly reference? 1963: [Unity] Assets/Plugins/UnityPurchasing/script/IAPDemo.cs(28,10): error CS0246: The type or namespace name `IAppleExtensions' could not be found. Are you missing an assembly reference? 1964: [Unity] Assets/Plugins/UnityPurchasing/script/IAPDemo.cs(29,10): error CS0246: The type or namespace name `IMoolahExtension' could not be found. Are you missing an assembly reference? 1965: [Unity] Assets/Plugins/UnityPurchasing/script/IAPDemo.cs(30,10): error CS0246: The type or namespace name `ISamsungAppsExtensions' could not be found. Are you missing an assembly reference? 1966: [Unity] Assets/Plugins/UnityPurchasing/script/IAPDemo.cs(462,27): error CS0246: The type or namespace name `LoginResultState' could not be found. Are you missing an assembly reference? 1967: [Unity] Assets/Plugins/UnityPurchasing/script/IAPDemo.cs(481,30): error CS0246: The type or namespace name `FastRegisterError' could not be found. Are you missing an assembly reference? Which is stopping the build from taking place. My initial idea to fix this was to remove these scripts entirely. IAPDemo i guessed was a helper script to showcase how IAP works? I'm curious if theres something that i need to add or change in the settings of the cloud build to get these guys to play nice..? Many thankyou's. Ben