Referenced file contains errors

Referenced file contains errors (http://www.ibatis.com/dtd/sql-map-config-2.dtd). For more information, right click on the message in the   
 Problems View and select "Show Details..."  

文件头报错
去掉XML Validator 和 XSL Validator 等文件类型的验证信息(包括Manual和Build)，如下图所示:

摘自：http://blog.csdn.net/xwygn/article/details/9744877