Mediation Test Suite Beta fails to compile - "Dex cannot parse version 52 byte code".

[tamerobots]

I installed the Unity Mediation Test Suite Beta on Unity 5.6.6f2 to try and test my admob mediation implementation.

I added the plugin without referencing it in my code and built it using Gradle to check that it did not produce any errors - but it did.

I do not have a custom build.gradle file or anything else that would otherwise cause problems, that I am aware of.

I have attached the error, please let me know what I can do to solve the problem. I understand that this is experimental software and is not out of beta yet.

Thanks

CommandInvokationFailure: Gradle build failed. 

C:\Program Files\Java\jdk1.8.0_77\bin\java.exe -classpath "C:\Program Files\Unity\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\gradle\lib\gradle-launcher-2.14.jar" org.gradle.launcher.GradleMain "assembleRelease"

stderr[

Dex: Error converting bytecode to dex:

Cause: Dex cannot parse version 52 byte code.

This is caused by library dependencies that have been compiled using Java 8 or above.

If you are using the 'java' gradle plugin in a library submodule add 

targetCompatibility = '1.7'

sourceCompatibility = '1.7'

to that submodule's build.gradle file.

    UNEXPECTED TOP-LEVEL EXCEPTION:

java.lang.RuntimeException: Exception parsing classes

at com.android.dx.command.dexer.Main.processClass(Main.java:761)

at com.android.dx.command.dexer.Main.processFileBytes(Main.java:727)

at com.android.dx.command.dexer.Main.access$1200(Main.java:87)

at com.android.dx.command.dexer.Main$FileBytesConsumer.processFileBytes(Main.java:1655)

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:681)

at com.android.dx.command.dexer.Main.processAllFiles(Main.java:578)

at com.android.dx.command.dexer.Main.runMonoDex(Main.java:315)

at com.android.dx.command.dexer.Main.run(Main.java:286)

at com.android.builder.internal.compiler.DexWrapper.run(DexWrapper.java:52)

at com.android.builder.core.AndroidBuilder$2.call(AndroidBuilder.java:1511)

at com.android.builder.core.AndroidBuilder$2.call(AndroidBuilder.java:1507)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)

Caused by: 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.parseClass(Main.java:773)

at com.android.dx.command.dexer.Main.access$1600(Main.java:87)

at com.android.dx.command.dexer.Main$ClassParserTask.call(Main.java:1694)

at com.android.dx.command.dexer.Main.processClass(Main.java:758)

... 17 more

1 error; aborting

FAILURE: Build failed with an exception.

* What went wrong:

Execution failed for task ':transformClassesWithDexForRelease'.

> com.android.build.api.transform.TransformException: java.lang.RuntimeException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: Return code 1 for dex process

[mobileadssdk-a...@google.com]

Hello, 

Thank you for contacting us. I was able to build the project by following the steps mentioned in this guide without any issues. Can you make sure that you are meeting all the prerequisites listed here? Can you also elaborate on the Mediation networks that you're using? If you continue to have an issue with this, could you please share a sample project so I can take a closer look at your setup and assist you further. You can reply back via Reply privately to author option. 

Regards,

Bharani Cherukuri
Mobile Ads SDK Team

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