Developer reply by Tuxman
Rated 5 out of 5 stars
I love this Add-on, using it since forever. However, on Windows 8.1 x64, the first time I download something in a new session, the download fails (<file> could not be opened, because the associated helper application does not exist. Change the association in your preferences.). Happens for random files. Could you please fix this?
Edit: fiddled around with the extensions. Can't really find the culprit, but after reinstalling some stuff it works perfectly now. You're add-on deserves all the five stars!
Uhm... any other extensions?
To create your own collections, you must have a Mozilla Add-ons account.