چگونگی رفع این خطا؟

[hamidhws]

http://code.msdn.microsoft.com/silve...ample-4cb56170

وقتی میخوام توی vs اجراش کنم این ارور رو میده :

Error 1 The "ShaderCompile" task was not found. Check the following: 1.) The name of the task in the project file is the same as the name of the task class. 2.) The task class is "public" and implements the Microsoft.Build.Framework.ITask interface. 3.) The task is correctly declared with <UsingTask> in the project file, or in the *.tasks files located in the "C:\Windows\Microsoft.NET\Framework\v4.0.30319 " directory. C:\Users\hamid\Desktop\Solar Wind 3D Sample_2\C#‎\SolarWind\SolarWind.csproj 175 5 SolarWind


کسی از دوستان میتونه کمک کنه؟