I am running scripts on a remote server now for months, but only yesterday the agent is not responding. I am not 100% sure on how to check this issue but all settings in agent, Extensions, etc are fine and network connectivity is working fine also... anyone have any additional ideas?
I have also faced the same issue and i experienced that when ever my browser stop responding (i.e. get hanged) due to some JRE problem or some low in Resources problem the Silk agent stop responding and shows the error
****Error: "Agent is not responding"
So, i think if you are using the Browser based application just check whether it hangs or not.