Updated to Android 3 studio and now I get the following error
Error: /app/build/intermediates/res/merged/debug/values/com_crashlytics_build_id.xml uncompiled XML file passed as an argument. First you need to compile the .flat file.
Error: java.util.concurrent.ExecutionException: com.android.builder.internal.aapt.AaptException: AAPT2 communication error:
Try adding:
android.enableAapt2 = false
to your gradle.propertiesfile.
gradle.properties
This allowed me to continue building my project with Crashlytics 2.6.8 on Android Studio beta 3.