MVVMLight安装了一个版本的程序集，但引用了不同的版本

Question

WPF项目中的MVVMLight 4.3.31.28629，VS2013 MVVMLight安装（通过nuget）添加了Microsoft.Practices.ServiceLocation 1.2.0.0 检查MvvmLight.Extras.WPF4，我发现这个：

我的应用程序在调试器中运行，但不是从命令行启动时。 （它从ViewModelLocator ctor抛出异常，试图找到Microsoft.Practices.ServiceLocation 1.0.0.0。）
为什么它在调试器内部运行，如何修复它以在调试器外部运行？ 谢谢 -

更新
我勒个去？为什么引用同一程序集的两个版本？

        at ProdoMetro.ViewModel.ViewModelLocator..ctor()
   InnerException: System.IO.FileLoadException
        HResult=-2146234304
        Message=Could not load file or assembly **Microsoft.Practices.ServiceLocation, Version=1.2.0.0**, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
        Source=TimerDoro
        FileName=Microsoft.Practices.ServiceLocation, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
        FusionLog=""
        StackTrace:
             at ProdoMetro.ViewModel.ViewModelLocator..cctor()
        InnerException: System.IO.FileLoadException
             HResult=-2146234304
             Message=Could not load file or assembly **Microsoft.Practices.ServiceLocation, Version=1.0.0.0**, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
             FileName=Microsoft.Practices.ServiceLocation, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
             FusionLog==== Pre-bind state information ===
LOG: DisplayName = Microsoft.Practices.ServiceLocation, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35

（完全指定的）