Multicast Publish Error

I have a multicast stream setup through adobe media server and I'm not able to view the stream from the multcast client. The multicast stream connects to the server and throws this error when trying to publish to multicast:

Multicast NetConnection Status: NetConnection.Connect.Failed, multicast context: livestream-1

MULTICAST PUBLISH ERROR: Failed to establish server-side NetConnection for use by multicast NetStream. Status code: NetConnection.Connect.Failed, description: , multicast context: livestream-1

Unbound multicast context: livestream-1 from source Stream name: livestream

Shutting down multicast context: livestream-1. Current state: STATE_DISCONNECTED

Unregistered multicast context: livestream-1

Finished shutting down multicast context: livestream-1

Any idea of what could cause this error?