I also faced similar issue in Android Studio 1.5.1 and gradle 1.5.0. I just have to remove unwanted libraries from dependencies which may be automatically added in my app's build.gradle file. One was : compile 'com.google.android.gms:play-services:8.4.0'. So for best practices try to only include specific play services library like for ads include only
dependencies {
compile 'com.google.android.gms:play-services-ads:8.4.0'
}
Although
defaultConfig {
multiDexEnabled true
}
this will also solve the issue, but provides with a lot of Notes in gradle console, making it confusing to find the other real issues during build