I’ve got the exact same problem with both “TVersity” and “RadioTime” streamers.
-Windows 8 Pro 64-bit with Media Pack
-XBOX360 Slim (Using it as the Media Center Extender Device)
When I run both programs directly from MC on the Computer, then they work just fine, no problems there.
But, When I launch those programs from the MC interface on the Xbox, then I simply see a black screen inside a blue border! - Why??!