No longer works in any way. The "Download as" thing never shows up in the page, and clicking on the toolbar icon just puts up an endless "Generating download link, pls. wait..." mini-window. As with all downloader extensions, this is in an arms race, and right now YouTube is winning. Virtually all of them are failing lately, but this one is failing worse that most, in not even putting up the interface elements it's supposed to, much less actually extracting video DL code.