I may add the caption option back when I’m confident we have an exhaustive list of suitable filename characters, but for now you can uncomment the FILENAME= line I disabled if you know the caption for your video will work in a filename. As pointed out by Mikko, the caption is not guaranteed to contain characters suitable for a filename.
Update (): I’ve replaced Vimeo Downloader 0.3.0 with version 0.3.1, which removes the caption from the filename. If you need to download password-protected Vimeo videos, you should use Free Youtube! since Vimeo Downloader won’t download them. When you visit a Vimeo page after installing Free Youtube!, a Download link will appear under the video. To download Vimeo videos within your browser, use Free Youtube! (get Firefox, install Greasemonkey, then go to Free Youtube! and click Install). Note: Vimeo Downloader is for those comfortable with the command line (or interested in learning).
