Error 11 The "Microsoft.Build.Tasks.Message" task could not be loaded from the assembly Microsoft.Build.Tasks.v3.5, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a. Could not load file or assembly 'Microsoft.Build.Tasks.v3.5, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.

在已安裝vs2008的機器上裝了  vs2010 , 用了幾天後移掉vs2010再使用vs2008開專案 , 就會在build的時候出現本訊息, 連帶著properities的 deploy頁面也無法開啟.

Solution:
1.重裝vs2008無效
2.移掉vs2008再重裝無效
3.把vs2010裝回去, 有效

以後就要留著s2010了.