I have the same problem above.
Error An error has occurred. See error log for more details. com/google/gdt/eclipse/platform/shared/ui/IPixelConverter.
You need to Install / reinstall "Jetty-9 Bundles Composite Repository" - http://download.eclipse.org/jetty/updates/jetty-bundles-9.x Checklist only: Jetty - Bundles: all the jetty bundles.