Multicast Source Route missing
Every IGMPv3 multicast routing requires the Source IP be added to the routing table. If a multicast input is not being received, verify the source IP has been added to the routing table.
Source content missing
Verify the input source is outputting the content attempting to be received. Verify the GigE physical link is up on the VUE server and that packets are being received.
NOTE: Use the tcpdump command to verify packet reception along with several other Linux tools.