Adding repository: unhendled event loop
Created originally on Bitbucket by danielsokolowski (Daniel Sokolowski)
On fresh Runtime Paltform Luna SR2 (4.4.2) (http://download.eclipse.org/eclipse/downloads/drops4/R-4.4.2-201502041700/#PlatformRuntime) Java8 when clicking add repository in the Mercurial perspective nothing happens, logs just show 'unhendled event loop' error.
I was able to resolve the issue by downgrading from Java 8-u45 to Java 7-u80 (64bit).