Execution failed for task ‘:app:preBuild’

Yesterday, I’ve tried to build an old project but an error occurred.  In order to resolve the issue you need to perform the following steps:

1. Update the SDK to 19.0.0+
2. Check all your build.gradle files whether they are using the 19.0.x version or not.

android {
compileSdkVersion 19
buildToolsVersion '19.0.3'
// Other Configuration
}

You can find a list of versions for the Android Build Tools here as well as in the SDK Manager.