VS2008做的Silverlight3项目用VS2010 Silverlight4打开报如下错误
The "CleanRiaClientFilesTask" 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. DeepEarth