ARCore1.0 Sample Scene Error: "does not implement interface member"

Hi All,

I am experimenting with the newly released ARCore 1.0 for Unity with the 2018.1.08 beta. However, I have a console error I can not seem to fix. As a result, unable to build the sample scene.

--- Error Message ---
Assets/GoogleARCore/SDK/Scripts/Editor/BuildHelper.cs(34,18): error CS0535: `GoogleARCoreInternal.BuildHelper' does not implement interface member `UnityEditor.Build.IPreprocessBuild.OnPreprocessBuild(UnityEditor.Build.Reporting.BuildReport)'

--- Attempted Solutions ---
None of the following fixed the issue;

• Confirmed following quickstart guide correctly: https://developers.google.com/ar/develop/unity/quickstart
  
• Confirmed Phone was eligible: S7
• Found similar issue and possible fix: https://stackoverflow.com/questions...ternal-buildhelper-does-not-implement-interfa
  
• Attempted to build, unable to compile due to existing error (Above)

Thank you in advance to anyone who is able to point me in the right direction

 

This is due to a change in Unity 2018 to the Build package, To get around it I for ARCore I modified the ARCore C# code to use the new interface, which does mean some commenting out of ARCore code, but the build worked OK and the app ran on the phone.

 

Worked for me, thanks reedny!