单声道中的System.Diagnostics.Tracing

我正在尝试使用通过Visual Studio for .NET 4.5创建的程序集在MonoDevelop 4.2.3中创建应用程序，但是出现以下警告：

/usr/lib/mono/4.5/Microsoft.Common.targets：警告：引用'System.Diagnostics.Tracing，Version = 4.0.0.0，Culture = neutral，PublicKeyToken = b03f5f7f11d50a3a'未解决（ListenerBinTest）

当然，当我尝试运行该应用程序时，它会失败并显示此错误：

System.IO.FileNotFoundException: Could not load file or assembly 'System.Diagnostics.Tracing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
  at System.Threading.Tasks.Dataflow.TransformBlock`2[System.Net.Sockets.Socket,vtortola.WebSockets.WebSocketListener+WebSocketNegotiationResult]..ctor (System.Func`2 transform, System.Threading.Tasks.Dataflow.ExecutionDataflowBlockOptions dataflowBlockOptions) [0x00000] in :0
  at vtortola.WebSockets.WebSocketListener..ctor (System.Net.IPEndPoint endpoint, vtortola.WebSockets.WebSocketListenerOptions options) [0x00000] in :0
  at vtortola.WebSockets.WebSocketListener..ctor (System.Net.IPEndPoint endpoint) [0x00000] in :0
  at ListenerBinTest.MainClass.Main (System.String[] args) [0x00010] in /home/vtortola/ListenerBinTest/ListenerBinTest/Program.cs:12

老实说，我没有使用与相关的任何东西System.Diagnostics.Tracing，但是显然System.Threading.Tasks.Dataflow会使用。

这是我的设置：

=== MonoDevelop ===
Version 4.2.3
Installation UUID: 2798c094-3f0b-42d7-afe4-2984107bea4e
Runtime:
    Mono 3.2.8 (tarball Mon Mar 10 19:20:49 UTC 2014) (64-bit)
    GTK+ 2.24.22 theme: oxygen-gtk
    GTK# (2.12.0.0)

=== Build Information ===
Git revision:
Build date: 2014-03-10 20:43:25+0000

=== Operating System ===
Linux
Linux linux-nt8h.site 3.11.10-7-desktop #1 SMP PREEMPT Mon Feb 3 09:41:24 UTC 2014 (750023e) x86_64 x86_64 x86_64 GNU/Linux

我该如何解决这个问题？

谢谢。