Excecution not working in Chrome

I have Test Studio standalone trial 2012.1.411.0 installed on my desktop (Windows 7) and it also installed the VS plugin, and can record and execute tests across all 4 supported browsers.

However, I installed the same version on Windows Server 2008 (without the VS plugin) and cannot get Chrome to execute any tests, it just hangs with "Preparing browser for automation..."

I've checked that the Chrome Extension is installed and it is Enabled and I've configured the browser.
When I checked for the registry entry at the bottom of this page, it wasn't there:
http://www.telerik.com/automated-testing-tools/support/documentation/user-guide/troubleshooting_guide/test-execution-problems/chrome/cannot-execute-in-chrome.aspx

I imported the reg entry and rebooted the server but Chrome will still not execute a simple test.

Is there anything else I can try?

Thanks,
Steve