Hola, por favor envíenos más detalles sobre el problema.

Hello, in order to help you better I need the following information.
Please, send me the information listed here: http://en.savefrom.net/user.php?info=1

Send a couple of links to the video that is downloaded without a name.

Hello, Reinstall the extension after an older version is uninstalled.
http://download.sf-helper.com/mozilla/helper_last.html

Clean the cache and cookies in your browser.

Hello, please, send us more details regarding the problem.

Unfortunately, we can not influence this.

Hello, Unfortunately, we don't fully understand you... please. provide us with more details regarding the issue.

For the better understanding it'll be great to see a screenshot with the error.

We fixed the problem.
Clean the cache and cookies in your browser.

Hello! We appreciate the info provided. We've reacted immediately,
and the problem with downloading has been fixed. As of now, everything works fine.
Thanks for using Savefrom.net!