Error when building using IL2CPP

[gaypunkposer]

stdout:
IL2CPP error for type 'GooglePlayGames.Native.PInvoke.PInvokeUtilities/OutStringMethod' in assembly '/Users/user/folder/project/Temp/StagingArea/Data/Managed/Assembly-CSharp.dll'
Additional information: Build a development build for more information. Exception has been thrown by the target of an invocation.
stderr:

Unhandled Exception:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidCastException: Cannot cast from source type to destination type.
at Unity.IL2CPP.IncludeCollection.NonTemplated.TypeDefinitionVisitor.HandleDelegate (Mono.Cecil.TypeDefinition typeDefinition) [0x00000] in :0
at Unity.IL2CPP.IncludeCollection.NonTemplated.TypeDefinitionVisitor.Visit (Mono.Cecil.TypeDefinition typeDefinition, Unity.Cecil.Visitor.Context context) [0x00000] in :0
at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in :0
--- End of inner exception stack trace ---
at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in :0
at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in :0
at Unity.Cecil.Visitor.Visitor.Visit[TypeDefinition](Mono.Cecil.TypeDefinition node, Unity.Cecil.Visitor.Context context) [0x00000] in :0
at Unity.Cecil.Visitor.Extensions.DoAccept[TypeDefinition](Mono.Cecil.TypeDefinition definition, Unity.Cecil.Visitor.Visitor visitor) [0x00000] in :0
at Unity.Cecil.Visitor.Extensions.Accept (Mono.Cecil.TypeDefinition typeDefinition, Unity.Cecil.Visitor.Visitor visitor) [0x00000] in :0
at Unity.IL2CPP.IncludeCollection.NonTemplated.IncludeCollector.ForTypeDefinition (Mono.Cecil.TypeDefinition type) [0x00000] in :0
at Unity.IL2CPP.IncludeCollection.NonTemplated.IncludeCollector.ForTypeDefinition (Mono.Cecil.TypeReference type) [0x00000] in :0
at Unity.IL2CPP.IncludeWriter.WriteTypeDefinitionIncludes (Mono.Cecil.TypeReference type, Unity.IL2CPP.CppCodeWriter writer) [0x00000] in :0
at Unity.IL2CPP.SourceWriter.WriteTypeDefinitionFor (System.String outputDirectory, Mono.Cecil.TypeReference type) [0x00000] in :0
at Unity.IL2CPP.SourceWriter.Write (Mono.Cecil.AssemblyDefinition assemblyDefinition, Unity.IL2CPP.GenericsCollection.InflatedCollection allGenerics, System.String outputDir, Mono.Cecil.TypeDefinition[] typeList, Unity.IL2CPP.StringLiterals.StringLiteralCollection stringLiteralCollection) [0x00000] in :0
at Unity.IL2CPP.AssemblyConverter.Convert (Mono.Cecil.AssemblyDefinition assemblyDefinition, Unity.IL2CPP.StringLiterals.StringLiteralCollection stringLiteralCollection, Unity.IL2CPP.GenericsCollection.InflatedCollection allGenerics) [0x00000] in :0
at Unity.IL2CPP.AssemblyConverter.Apply () [0x00000] in :0
at Unity.IL2CPP.AssemblyConverter.ConvertAssemblies (System.String[] assemblies, System.String outputDir) [0x00000] in :0
[ERROR] FATAL UNHANDLED EXCEPTION: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidCastException: Cannot cast from source type to destination type.
at Unity.IL2CPP.IncludeCollection.NonTemplated.TypeDefinitionVisitor.HandleDelegate (Mono.Cecil.TypeDefinition typeDefinition) [0x00000] in :0
at Unity.IL2CPP.IncludeCollection.NonTemplated.TypeDefinitionVisitor.Visit (Mono.Cecil.TypeDefinition typeDefinition, Unity.Cecil.Visitor.Context context) [0x00000] in :0
at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in :0
--- End of inner exception stack trace ---
at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in :0
at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in :0
at Unity.Cecil.Visitor.Visitor.Visit[TypeDefinition](Mono.Cecil.TypeDefinition node, Unity.Cecil.Visitor.Context context) [0x00000] in :0
at Unity.Cecil.Visitor.Extensions.DoAccept[TypeDefinition](Mono.Cecil.TypeDefinition definition, Unity.Cecil.Visitor.Visitor visitor) [0x00000] in :0
at Unity.Cecil.Visitor.Extensions.Accept (Mono.Cecil.TypeDefinition typeDefinition, Unity.Cecil.Visitor.Visitor visitor) [0x00000] in :0
at Unity.IL2CPP.IncludeCollection.NonTemplated.IncludeCollector.ForTypeDefinition (Mono.Cecil.TypeDefinition type) [0x00000] in :0
at Unity.IL2CPP.IncludeCollection.NonTemplated.IncludeCollector.ForTypeDefinition (Mono.Cecil.TypeReference type) [0x00000] in :0
at Unity.IL2CPP.IncludeWriter.WriteTypeDefinitionIncludes (Mono.Cecil.TypeReference type, Unity.IL2CPP.CppCodeWriter writer) [0x00000] in :0
at Unity.IL2CPP.SourceWriter.WriteTypeDefinitionFor (System.String outputDirectory, Mono.Cecil.TypeReference type) [0x00000] in :0
at Unity.IL2CPP.SourceWriter.Write (Mono.Cecil.AssemblyDefinition assemblyDefinition, Unity.IL2CPP.GenericsCollection.InflatedCollection allGenerics, System.String outputDir, Mono.Cecil.TypeDefinition[] typeList, Unity.IL2CPP.StringLiterals.StringLiteralCollection stringLiteralCollection) [0x00000] in :0
at Unity.IL2CPP.AssemblyConverter.Convert (Mono.Cecil.AssemblyDefinition assemblyDefinition, Unity.IL2CPP.StringLiterals.StringLiteralCollection stringLiteralCollection, Unity.IL2CPP.GenericsCollection.InflatedCollection allGenerics) [0x00000] in :0
at Unity.IL2CPP.AssemblyConverter.Apply () [0x00000] in :0
at Unity.IL2CPP.AssemblyConverter.ConvertAssemblies (System.String[] assemblies, System.String outputDir) [0x00000] in :0

UnityEngine.Debug:LogError(Object)
UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:66)
UnityEditorInternal.IL2CPPBuilder:ConvertPlayerDlltoCpp(ICollection1, String, String) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:404) UnityEditorInternal.IL2CPPBuilder:Run() (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:275) UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, String, IIl2CppPlatformProvider, Action1, RuntimeClassRegistry) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:211)
UnityEditor.HostView:OnGUI()

[claywilkinson]

Hi @jasoncoan - Have you posted this on the Unity website (http://issuetracker.unity3d.com/)? I don't see anything obvious in your post that makes me believe it is related to the Google Play Game Services plugin...

[FredGithub]

Same error here, looks like nobody tried to build this plugin in unity 5 with IL2CPP. Would love to see some update soon

[barrasco]

I have the same issue with Unity 4.6.3, building with IL2CPP

[claywilkinson]

@barrasco - Is your issue similar to #442? It looks like it is fixed by updating Unity.

[TimBayer]

I started getting this same error as soon as I installed Google Play Game Services. A Unity employee commented on it here http://forum.unity3d.com/threads/il2cpp-exe-error.311499/ and said they would look into it. Google Play Game Services is definitely what started causing it for me, no idea if this is a Unity fix though, or a plugin issue.

Update: The latest Unity patch 5.0.0p2 fixed this error for me:
http://unity3d.com/unity/qa/patch-releases

[claywilkinson]

I compiled all the samples with no issues in 5.0.1. Please open another issue, ideally with a code sample if you encounter this again.