I am trying to get a private instance of WPT up and running and used the AMIs on EC2 for my agents and fired up tests to see it running and noted the following two errors:
(a) Manifest.xml for chrome extension apparently needs to be an int of 2
(b) Apparently the command line flag to ignore SSL cert errors on chrome isnt valid anymore.
Make sure you have a new agent update on your server in work/update. The version on the AMI’s is quite old but they auto-update from the server they connect to before running any tests.
At a minimum you should have the wptupdate.zip/ini from 2.14 but you can also get the bleeding edge latest and greatest: https://sites.google.com/a/webpagetest.org/docs/private-instances#TOC-Updating-Test-Agents
As always you are spot on! Thank you