What steps will reproduce the problem?

To reproduce, use this code. public interface IMyInterface { string[,] GetMultiDimensionArray(); }

[Test] public void Test2() { var mock = new Moq.Mock<IMyInterface>(); IMyInterface myProxyObj = mock.Object; }

The above code will throw an exception:

FMStationBusinessLayer.Test.OrderServiceTest.Test2: System.TypeLoadException : Signature of the body and declaration in a method implementation do not match. Type: 'Castle.Proxies.IMyInterfaceProxy'. Assembly: 'DynamicProxyGenAssembly2, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.

at System.Reflection.Emit.TypeBuilder._TermCreateClass(Int32 handle, Module module) at System.Reflection.Emit.TypeBuilder.CreateTypeNoLock() at System.Reflection.Emit.TypeBuilder.CreateType() at Castle.DynamicProxy.Generators.Emitters.AbstractTypeEmitter.CreateType(TypeBuilder type) at Castle.DynamicProxy.Generators.Emitters.AbstractTypeEmitter.BuildType() at Castle.DynamicProxy.Generators.InterfaceProxyWithoutTargetGenerator.GenerateType(String typeName, Type proxyTargetType, Type[] interfaces, INamingScope namingScope) at Castle.DynamicProxy.Generators.InterfaceProxyWithTargetGenerator.GenerateCode(Type proxyTargetType, Type[] interfaces, ProxyGenerationOptions options) at Castle.DynamicProxy.DefaultProxyBuilder.CreateInterfaceProxyTypeWithoutTarget(Type interfaceToProxy, Type[] additionalInterfacesToProxy, ProxyGenerationOptions options) at Castle.DynamicProxy.ProxyGenerator.CreateInterfaceProxyWithoutTarget(Type interfaceToProxy, Type[] additionalInterfacesToProxy, ProxyGenerationOptions options, IInterceptor[] interceptors) at Moq.Proxy.CastleProxyFactory.CreateProxy[T](ICallInterceptor interceptor, Type[] interfaces, Object[] arguments) at Moq.Mock1.<InitializeInstance>b__0() at Moq.PexProtector.Invoke(Action action) at Moq.Mock1.InitializeInstance() at Moq.Mock1.OnGetObject() at Moq.Mock1.get_Object() at FMStationBusinessLayer.Test.OrderServiceTest.Test2()

What is the expected output? What do you see instead? I expect no exception throw.

What version of the product are you using? On what operating system? I am using verion 4.0.10827.0, Windows XP.

Please provide any additional information below. I believe the Castle DynamicProxy generator is not generating the proxy object properly. This is a bug I see in both Moq and Rhino Mock, but Rhino Mock has a workaround for that.

looks like a DP issue. Could you report it to Castle instead?

It's a BCL (Reflection Emit generates invalid token for multidimentional array) bug. It's been there since .NET 1 and not fixed yet. There's nothing we can do.