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System.ArgumentNullException was unhandled
  HResult=-2147467261
  Message=Parameter type inference does not work for null values. Indicate the parameter type explicitly using a properly configured instance of the InjectionParameter or InjectionParameter<T> classes.
Parameter name: parameterValue
  Source=Tweetinvi.API
  ParamName=parameterValue
  StackTrace:
       at Microsoft.Practices.Unity.InjectionParameter.GetParameterType(Object parameterValue)
       at Microsoft.Practices.Unity.InjectionParameter..ctor(Object parameterValue)
       at Microsoft.Practices.Unity.InjectionParameterValue.ToParameter(Object value)
       at Microsoft.Practices.Unity.ParameterOverride..ctor(String parameterName, Object parameterValue)
       at TweetinviLogic.Wrapper.ParameterOverrideWrapper.get_ResolverOverride()
       at TweetinviFactories.UnityFactory`1.<Create>b__0(IResolverOverrideWrapper w)
       at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
       at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
       at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
       at TweetinviFactories.UnityFactory`1.Create(IResolverOverrideWrapper[] resolverOverrideWrappers)
       at TweetinviFactories.Direct_Messages.MessageFactory.GenerateMessageFromMessageDTO(IMessageDTO messageDTO)
       at TweetinviControllers.Messages.MessageController.PublishMessage(IMessageDTO messageDTO)
       at TweetinviLogic.Message.Publish()
       at Social_Media_Publisher.Program.PostOnTwitter(String message) in c:\Dropbox\Software\Social Media Publisher\Social Media Publisher\Social Media Publisher\Program.cs:line 70
       at Social_Media_Publisher.Program.Main(String[] args) in c:\Dropbox\Software\Social Media Publisher\Social Media Publisher\Social Media Publisher\Program.cs:line 23
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: