I am having trouble streaming media from my pc to my ps3.

My ps3 finds my pc ok and can connect to the internet but when i try and stream video i get a error message DNLA PROTOCOL ERROR(2006).

All my firewalls are turned off and the ps3 is selested in the wireless access list on the router.Also i am running media player 11 on vista.

Is there anything else i need to do?