Ah the version might be an issue. I do believe I am using the BETA version of Chrome.
If you like this script and want to install it on Chrome, you may need to upgrade to the Beta version here:
http://www.google.com/intl/en/landing/chrome/beta/
Any significant changes visually or functionally with Beta version? I like the current, latest version 4.1.249.1045 (42898)