This script does not work at all when using it in Fluid to make a standalone webapp.
I can check for compatibility after the next release. I'm waiting on Twitter to roll out it's updates (including their retweet standard) before fixing problems caused by other changes they've made. It'll be a while. It's probably related to code from Endless Tweets, where there's been a report as well. More info: http://userscripts.org/topics/38978