Crashes about 60% of the time when I try to use the "Close tree" function - I have to to go "Manage Extension" and select "Options", then it comes up with an error that says "A web page is slowing down your browser" and I select "Stop It" to get it working again. Consistently.

Also it'd be really nice to just have the option to have it close tree automatically, but I'll settle for just having the function work without crashing the extension and freezing my browser.