SU2014, Win7 32bit and IE11 (probably applies to all SU versions and OS versions..)
Empty screen, nothing on Ruby console. That is if you are using default Sketchup textures. Import your own and it works.
No one should use SU internal textures anyway, they have a habit of mysteriously duplicating themselves (and causing all kinds of havoc with various game engines, specially if the engine is limited to powers of two resolutions, for ex gMotor2...With SU internal textures i've ended up with 2000 duplicates on 2000 tri-count object..) So get in habit of not using them ever, not even as placeholders. I believe there is a way to export all SU textures but that's another topic.
Took me a while to figure this out. Hope it helps