Error when building for Android after importing an asset from the store.

Questions & Answers
1

Hello,
I just bought an asset called Cross Platform Native Plugins - Ultra Pack.
It’s very easy to use and well documented, however when I try to test it on my mobile device I get this error ( when Gradle is tasking “IncrementalDebugJavaCompilationSafeguard” ).

These are the details of the error:

CommandInvokationFailure: Gradle build failed. 
/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/bin/java -classpath "/Applications/Unity/PlaybackEngines/AndroidPlayer/Tools/gradle/lib/gradle-launcher-2.14.jar" org.gradle.launcher.GradleMain "assembleDebug"

stderr[
Dex: Error converting bytecode to dex:
Cause: com.android.dex.DexException: Multiple dex files define Lcom/twitter/sdk/android/core/BuildConfig;
    UNEXPECTED TOP-LEVEL EXCEPTION:
    com.android.dex.DexException: Multiple dex files define Lcom/twitter/sdk/android/core/BuildConfig;
    	at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:591)
    	at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:546)
    	at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:528)
    	at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:164)
    	at com.android.dx.merge.DexMerger.merge(DexMerger.java:188)
    	at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:504)
    	at com.android.dx.command.dexer.Main.runMonoDex(Main.java:334)
    	at com.android.dx.command.dexer.Main.run(Main.java:277)
    	at com.android.dx.command.dexer.Main.main(Main.java:245)
    	at com.android.dx.command.Main.main(Main.java:106)
    

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':transformClassesWithDexForDebug'.
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/bin/java'' finished with non-zero exit value 2

PS: I already contacted the developers but they didn’t answer, yet. I also opened a discussion on their forum but nobody answered, yet.
Thank you for your time.

2

try to search in unity “AndroidManifest” and tell me if it got 2 androidmanifest if it has two try to move one of them to your desktop and try to build it.