I've been a long time TVersity user.  Love the app.  It's the nicest of the UPnP streaming out there.  Well documented, easy to use, etc..  Enough with the kissing up...

NAT Related Problems

There's some conflicting information about the ports you need open/forwarded to your Xbox.  The Microsoft article doesn't list the correct ports or protocol.  Often times you end up getting a NAT related message.

NAT Mesages: