升级SSIS到SQL Server 2012，服务器只安装了SSIS一个功能，应用程序执行dtsx包时报错如下：
An Integration Services class cannot be found. Make sure that Integration Services is correctly installed on the computer that is running the application. Also, make sure that the 64-bit version of Integration Services is installed if you are running a 64-bit application.
折腾了一天，终于找到解决方案，原来需要安装SQL Server Client Tools SDK，应用程序才能引用到Microsoft.SQLServer.ManagedDTS.dll
在这里找到的 http://stackoverflow.com/questions/4920591/havent-got-microsoft-sqlserver-manageddts-dll-but
SSIS 2012 Error： An Integration Services class cannot be found
原文：http://www.cnblogs.com/yujwshx/p/4519891.html