Error creating a GameServices object

Question

When trying to authenticate the local user I see the next exception happening:

I/Unity   (11264):  [Play Games Plugin DLL] 11/22/14 12:32:38 -05:00 DEBUG: Activating PlayGamesPlatform.
I/Unity   (11264):  [Play Games Plugin DLL] 11/22/14 12:32:38 -05:00 DEBUG: PlayGamesPlatform activated: GooglePlayGames.PlayGamesPlatform
I/Unity   (11264):  [Play Games Plugin DLL] 11/22/14 12:32:38 -05:00 DEBUG: Creating platform-specific Play Games client.
I/Unity   (11264):  [Play Games Plugin DLL] 11/22/14 12:32:38 -05:00 DEBUG: Creating real IPlayGamesClient

D/GamesUnitySDK(11264): Performing Android initialization of the GPG SDK

I/Unity   (11264): InvalidOperationException: There was an error creating a GameServices object. Check for log errors from GamesNativeSDK
I/Unity   (11264):   at GooglePlayGames.Native.PInvoke.GameServicesBuilder.Build (GooglePlayGames.Native.PInvoke.PlatformConfiguration configRef) [0x00000] in <filename unknown>:0 
I/Unity   (11264):   at GooglePlayGames.Native.NativeClient.InitializeGameServices () [0x00000] in <filename unknown>:0 
I/Unity   (11264):   at GooglePlayGames.Native.NativeClient.Authenticate (System.Action`1 callback, Boolean silent) [0x00000] in <filename unknown>:0 
I/Unity   (11264):   at GooglePlayGames.PlayGamesPlatform.Authenticate (System.Action`1 callback, Boolean silent) [0x00000] in <filename unknown>:0 
I/Unity   (11264):   at GooglePlayGames.PlayGamesPlatform.Authenticate (System.Action`1 callback) [0x00000] in <filename unknown>:0 
I/Unity   (11264):   at GooglePlayGames.PlayGamesLocalUser.Authenticate (System.Action`1 callback) [0x00000] in <filename unknown>:0 

Errors from GamesNativeSDK:

E/GamesNativeSDK(11264): Can't register class com/google/android/gms/games/snapshot/SnapshotContents: an exception occurred.
E/GamesNativeSDK(11264): Could not register one or more required Java classes.

What does this error mean and how can I fix it?

I am using the latest build available at Google Play Games plugin for Unity:

• GooglePlayGamesPlugin-0.9.10.unitypackage

Answer 1

Just for future reference, @mrggl also said:

The error referenced in the stack overflow thread is mostly caused by an out of date version of the Google Play Services client library. Make sure that you've updated to the most recent version, rerun android setup in Google Play Games, and then try again.

Just in case the error prevails, see the same issue