problem .jar in Unity

I’m trying to load one Activity from .jar like first screen, until to load the unity scene.
But my app don’t open… crash!!!

FATAL EXCEPTION: main
Process: com.example.NewVuforia5, PID: 2921
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.NewVuforia5/com.example.holamundy.MainActivity}: android.content.res.Resources$NotFoundException: File NewVuforia5 from xml type layout resource ID #0x7f030000

I found the solve!
Don’t use Unity 5.2.1!!!

If i run with Unity 5.1.1, the app works… can load the XML resources…