The last failure had nothing in the log:

#section:main
----------messages:(8/229)----------
command: main AdaptorMulticasting
reason: User specified action: run main AdaptorMulticasting
Mode: agentvm
Agent id: 7
Timeout refired 480 times
Timeout information:
--- Timeout information end.
elapsed time (seconds): 499.435
----------configuration:(11/1534)----------
        AdaptorMulticasting
result: Error. Agent error: java.lang.Exception: Agent 7 timed out with a timeout of 480 seconds; check console log for any additional details