Messages like "control deamon is not running" means that the agent was stopped and was restarted. Typically you see this when the agent was manually stopped (or even scheduled task) or the machine was rebooted. Do a sanity check to see if none of these happened?
Also you are using an older OA 11.x agent and there are newer versions (latest is OA 11.11) available. If possible see if you can update the agent and it may help you as well.