Blocked Media Server

I have a Media Server set up on my computer and I want to hook up my xbox 360 to it. When I turn comodo off i can connect fine but when I turn it on i get this in my logs:

Date/Time :2007-09-14 12:03:57
Severity :Medium
Reporter :Network Monitor
Description: Inbound Policy Violation (Access Denied, IP =, Port = upnp-mcast(1900))
Protocol: UDP Incoming
Reason: Network Control Rule ID = 5

I opened all the ports for this program, in and out

can anyone help me