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

I got the same error.

First, go to Window->Services->In-App Purchasing and reimport the latest version. My last import was somehow incomplete.

Secondly, it turned out the line
#**/*[Bb]in/
in the file
.gitignore
caused that the content of the folder
/Assets/Plugin
was not committed to the git repository.