AS无法运行项目 Error:Execution failed for task ':a

Question

请问这是什么错误？我该如何解决？在线等，急求！！！
Error:Execution failed for task ':app:buildInfoDebugLoader'.

Exception while doing past iteration backup : Source C:\Users\gowcage\Desktop\tenrice\app\build\intermediates\builds\debug\213761980037880\classes.dex and destination C:\Users\gowcage\Desktop\tenrice\app\build\intermediates\builds\debug\213761980037880\classes.dex must be different

Answer 1

http://www.2cto.com/kf/201305/214303.html