[2015-08-03 11:03:17 - Dex Loader] Unable to execute dex: Multiple dex files define Lcom/xxx/xxx/xxx;
[2015-08-03 11:03:17 - xxx] Conversion to Dalvik format failed: Unable to execute dex: Multiple dex files define Lcom/xxx/xxx/MainActivity;
调试出错，原来是jar包重复了。具体就是错误指向的那个包名所属的jar包。
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异常Unable to execute dex: Multiple dex files define Lcom/xxx/xxx/xxx
原文：http://blog.csdn.net/zhanghaofor/article/details/47253439