spazcatsam itmichal
I think I have this figured out, if you go into the image profile for your image, then multicast options and add an argument to the receiver, I used --nosync, see if that works. So far it has worked for us. I cannot seem to find a "global" place to update this so it's every image we have to update the setting.
apparently when the udp-receiver command is generated it has "" in the arguments and that causes it to hang up, and adding an argument allows it to complete as expected.