Build failed after updating tools for Android L

Question

I cannot build my project after updating the tools. I get this error in Android Studio.

/build/exploded-aar/com.android.support/support-v4/21.0.0-rc1/And

Answer 1

This solved the issue for me and I was able to build the app.

compile('com.android.support:support-v4:19.1.0'){
    force = true
}