ARcore preview error when building

Hey I am trying to build the ARcoreExample provided here :

https://developers.google.com/ar/develop/unity/getting-started

I followed all of the steps and am getting two compilation errors and for the life of me I cannot figure them out.

#1:
TypeLoadException: Could not load type 'UnityEngine.XR.Tango.NativeImage' from assembly 'UnityEngine, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.
System.Reflection.MonoMethodInfo.GetMethodInfo (IntPtr handle) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:59)
System.Reflection.MonoMethodInfo.GetAttributes (IntPtr handle) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:75)
System.Reflection.MonoMethod.get_Attributes () (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:245)
System.Reflection.MethodBase.get_IsSpecialName () (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:184)
UnityEditor.Build.BuildPipelineInterfaces.InitializeBuildCallbacks (BuildCallbacks findFlags) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildPipelineInterfaces.cs:191)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)

#2:
Error building Player: TypeLoadException: Could not load type 'UnityEngine.XR.Tango.NativeImage' from assembly 'UnityEngine, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.

Any help or tips of what direction to go in would be amazing, i am using the newest beta build for unity as well.

Thanks!

FIXED:

sdk mappings got removed with some other instillation, unity did not prompt me for this

 

I am also getting this error when loading the latest version of https://github.com/google-ar/arcore-unity-sdk (d3cfa7e) into Unity beta 2017.3.0b1 Personal.

 

Could be the latest beta thats broken, check your SDK's... We eventually got it to build but it crashes on launch :/

 

Hi folks -- Please use 2017.2b11 or f1, available here: https://unity3d.com/unity/beta/archive

 

For me ARCore is also not working on 2017.3.0b1 ... shame ...
https://developers.google.com/ar/develop/unity/getting-started clearly says: "Install Unity 2017.2 Beta 11 or higher"

 

Yes, confirmed that going back to 2017.2.0f1 has removed the error from the console. Thanks both of you!

 

Same for me. Burned a lot of time with that one.

 

Always the same, "or latest beta" , but NO YOU SHOULDNT because the latest beta does never work properly.

 

Had exactly that, saw on the first message of the official topic 'Latest Beta' and..... yeah I found this thread. Awesome!!!
And then you go to the beta page and yes..... the version they talk about is removed from there. Awesome again!!!
So I guess, 2017.2.0f2 does work? Because I don't see any message anywhere about that. Awesome once more XD

 

hey guys. i tried downgrade my unity, but without luck.
the same error occurs:
CommandInvokationFailure: Unable to merge android manifests. See the Console for more details.
/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/bin/java -Xmx2048M -Dcom.android.sdkmanager.toolsdir="/Users/USER/Library/Android/sdk/tools" -Dfile.encoding=UTF8 -jar "/Applications/Unity/PlaybackEngines/AndroidPlayer/Tools/sdktools.jar" -

stderr[
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/android/manifmerger/Merger : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:274)
at SDKMain.main(SDKMain.java:128)
]
stdout[

]
exit code: 1
UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandInternal (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandSafe (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)