Unindexed remote maven repositories found.

I keep getting this in Event Log

            The following repositories used in your gradle projects were not indexed yet:
            http://dl.bintray.com/kotlin/kotlin-eap-1.1
            If you want to use dependency completion for these repositories artifacts,
            Open Repositories List, select required repositories and press "Update" button

If I open the Repository List, select http://dl.bintray.com/kotlin/kotlin-eap-1.1

and press Update, I get Error, if I leave the mouse on it, I get:

java.lang.RuntimeException: java.io.FileNotFoundException: Resource nexus-maven-repository-index.properties does not exists