控制台错误。无法执行dex？

请谁能告诉我如何解决下面发布的错误？尽管应用程序没有错误，但当我尝试启动它时收到该错误。控制台错误。无法执行dex？

Console_Error

[2014-11-06 13:04:49 - org.eclipse.paho.android.service.test] Dx 
trouble writing output: already prepared 
[2014-11-06 13:04:49 - Dex Loader] Unable to execute dex: Multiple dex files define 
Lorg/eclipse/paho/android/service/AlarmPingSender$AlarmReceiver$1; 
[2014-11-06 13:04:49 - org.eclipse.paho.android.service.test] Conversion to Dalvik format failed: 
Unable to execute dex: Multiple dex files define 
Lorg/eclipse/paho/android/service/AlarmPingSender$AlarmReceiver$1;

来源

2014-11-06 user2121

Right click on the Project Name 
Select Build Path -> Configure Build Path 
In Java Build Path, go to the tab Order and Export 

Uncheck your .jar library

只是有时：为了和导出选项卡我没有任何的jar库那里，所以我选中 Android的私人图书馆项目。现在我的项目正在运行。

check this

来源

2014-11-06 12:18:19