The CDR service read an unknown message type from the message queue . The message will be ignored. Message type: %1 Cause: ...

The CDR service read an unknown message type from the message queue . The message will be ignored.

Message type: %1
Cause: There may be a version mismatch between the CDR agent and the Monitoring Server, or malformed messages may be present in the message queue.
Resolution:
Check the versions of the agent and the server, and the security settings on the queue