我已经安装了visual studio 2010 express，然后安装了Reactive Extensions 2.0。当我在调试模式下启动我的应用程序时，抛出异常后使用反应式扩展的部分代码：
The assembly with display name 'System.Reactive.Debugger' failed to load in the 'Load' binding context of the AppDomain with ID 1. The cause of the failure was:
System.IO.FileNotFoundException: Could not load file or assembly
'System.Reactive.Debugger, Version=2.0.20823.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies
问题是我无处可找到这个dll - System.Reactive.Debugger。