Troubleshooting EC2 Test Agents

I have been having trouble with one of the agents, and am unsure of how to proceed from here.

It is specifically AMI ami-6cb82956 (AP-SouthEast-2 IE9/Chrome/FF).

I’m not seeing any connections from it to the server. I see the other agent I have running (IE8 ap-southeast-2) as quite active in tcpdump, but not this one, which has the same configuration, both of which are created through CFN.

I have tried recreating the instance again, but same thing.

nmap show the host as up (all ports filtered), the security groups are presently wide open.

Anyone else experiencing issues with this AMI, or any AMI’s? Any way to troubleshoot? Is there possibly an issue with this AMI?