Unable to open sync connection异常

[2013-05-09 17:27:40 - XXXPad3.1] Failed to install TudouPad3.1.apk on device '10009ffb1a6a': Unable to open sync connection!
[2013-05-09 17:27:40 - XXXPad3.1] java.io.IOException: Unable to open sync connection!
[2013-05-09 17:27:40 - XXXPad3.1] Launch canceled!

 方案：找到USB调试，关掉USB调试，然后重新开启。