Tests hanging on private instance?

Hello,

I set up a private instance of WPT tonight using [0] in order to run a full site report on www.ubuntu.com using Andy Davies’ awesome spreadsheet tool. [1]

I think I managed to connect all the right wires but it seems like when my tests successfully initialise but then hang?

According to the AWS panel, the server has successfully spun up a test agent.

Anyone any ideas?

[0] Web Performance Calendar » WebPagetest Private Instances in Five Minutes
[1] Web Performance Calendar » Driving WebPagetest from a Google Docs Spreadsheet