`Advertisements' does not exist in the namespace `UnityEngine' 5.5.0b3 Android

I can't build my Android game on Cloud Build because of an error: CS0234: The type or namespace name `Advertisements' does not exist in the namespace `UnityEngine'. Are you missing an assembly reference?
It is an Android build in the latest 5.5 beta (b3 in this build). Everything works fine in editor.

 

I'm getting the same problem, but with 5.4. It was working fine and just stopped working, don't know where to go for help...*sigh*

 

I am not exactly sure, but my opinion is that this happens when you build with a different version of Unity than the one you saved your project in. It happened to me again few days ago after updating my project to Unity 5.5.0f3 (in Editor) and then committing to source control and building with Cloud Build (Unity version: Always Use Latest 5.x) which used Unity 5.4.3f1.

 

Hello

Sorry that you're having this issue. Please see this thread: https://forum.unity3d.com/threads/u...e-ads-service-to-fix-namespace-issues.443908/

and let me know if that fixes the issue for you

- Sophia