I also find a bug for 3.0API Template,my project run base on windows phone SDK7.1,It can run ,but put it in Expression Blend,Threre is always a promblems:"System.TypeLoadException�?��?��?�?序�??'System.Windows, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'中�?�载类�??'System.Net.HttpUtility'�??"Scene now,I cannot find the solution�?and waiting for�?��?�