在Windows XP中运行.NET 4.0 WPF应用程序时与ICommand相关的错误

I have a WPF application that is targeted to the .NET 4.0 framework and uses the MVVM pattern with the MVVM Light toolkit. When I run this application on a Windows XP machine with the .NET 4.0 runtime installed, I get the following exception:I have a WPF application that is targeted to th