Message: 
System.ArgumentNullException : Value cannot be null. (Parameter 'type')

  Stack Trace: 
InvocationHelper.GetMethodOnType(Type type, MethodInfo proxiedMethod)
InheritanceInvocation.get_MethodInvocationTarget()
CastleInvocationMapper.Map(IInvocation castleInvocation) line 11
CastleForwardingInterceptor.Intercept(IInvocation invocation) line 12
AbstractInvocation.Proceed()
ProxyIdInterceptor.Intercept(IInvocation invocation) line 20
AbstractInvocation.Proceed()
ObjectProxy.GetText()
DefaultInterfacesImplementations.DefaultInterface_SetupReturns_UsesReturns() line 18
MethodBaseInvoker.InterpretedInvoke_Method(Object obj, IntPtr* args)
MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
1)    at Castle.DynamicProxy.Internal.InvocationHelper.GetMethodOnType(Type type, MethodInfo proxiedMethod)
InheritanceInvocation.get_MethodInvocationTarget()
CastleInvocationMapper.Map(IInvocation castleInvocation) line 11
CastleForwardingInterceptor.Intercept(IInvocation invocation) line 12
AbstractInvocation.Proceed()
ProxyIdInterceptor.Intercept(IInvocation invocation) line 20
AbstractInvocation.Proceed()
ObjectProxy.GetText()
DefaultInterfacesImplementations.DefaultInterface_SetupReturns_UsesReturns() line 18
MethodBaseInvoker.InterpretedInvoke_Method(Object obj, IntPtr* args)
MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)