UNEXPECTED TOP-LEVEL EXCEPTION

UNEXPECTED TOP-LEVEL EXCEPTION:
...while parsing com/alibaba/fastjson/JSON.class
1 error; aborting
Error:Execution failed for task ':mfh-owner-client:preDexDebug'.
> com.android.ide.common.internal.LoggedErrorException: Failed to run command:
	D:\Program Files\as\sdk\build-tools\19.1.0\dx.bat --dex --output F:\Nat\SVN9\trunk\mfh-owner-client\build\intermediates\pre-dexed\debug\mfh-comn-all-3831a0acc8349acc4bdbb05079cfb51ddc2933b1.jar F:\Nat\SVN9\trunk\mfh-comn-all\build\libs\mfh-comn-all.jar
Error Code:
	1
Output:
	UNEXPECTED TOP-LEVEL EXCEPTION:
	com.android.dx.cf.iface.ParseException: bad class file magic (cafebabe) or version (0034.0000)
		at com.android.dx.cf.direct.DirectClassFile.parse0(DirectClassFile.java:472)
		at com.android.dx.cf.direct.DirectClassFile.parse(DirectClassFile.java:406)
		at com.android.dx.cf.direct.DirectClassFile.parseToInterfacesIfNecessary(DirectClassFile.java:388)
		at com.android.dx.cf.direct.DirectClassFile.getMagic(DirectClassFile.java:251)
		at com.android.dx.command.dexer.Main.processClass(Main.java:665)
		at com.android.dx.command.dexer.Main.processFileBytes(Main.java:634)
		at com.android.dx.command.dexer.Main.access$600(Main.java:78)
		at com.android.dx.command.dexer.Main$1.processFileBytes(Main.java:572)
		at com.android.dx.cf.direct.ClassPathOpener.processArchive(ClassPathOpener.java:284)
		at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:166)
		at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:144)
		at com.android.dx.command.dexer.Main.processOne(Main.java:596)
		at com.android.dx.command.dexer.Main.processAllFiles(Main.java:498)
		at com.android.dx.command.dexer.Main.runMonoDex(Main.java:264)
		at com.android.dx.command.dexer.Main.run(Main.java:230)
		at com.android.dx.command.dexer.Main.main(Main.java:199)
		at com.android.dx.command.Main.main(Main.java:103)
	...while parsing com/alibaba/fastjson/JSON.class
	1 error; aborting