Hello! Our help will be more effective, if you copy and send us info about your browser and the Savefrom.Net extension:
http://en.savefrom.net/user.php?info=1
We'd also need some links you can't download (to test them).
For the better understanding it'll be great to see a screenshot with the error.
We are waiting for your reply, and thank you for contacting us Savefrom.net Team!

Mozilla Firefox: http://download.sf-helper.com/mozilla/helper_last.html

The information how to install the extension to Google Chrome browser
can be found here: http://en.savefrom.net/faq.php#ext_inst_chrome

Hello! Our help will be more effective, if you copy and send us info about your browser and the Savefrom.Net extension:
http://en.savefrom.net/user.php?info=1
We'd also need some links you can't download (to test them).
For the better understanding it'll be great to see a screenshot with the error.
We are waiting for your reply, and thank you for contacting us Savefrom.net Team!

Hello, in order to download 1080p from Youtube, you need to install the Ummy Video Downloader: http://videodownloader.ummy.net

Hello, after showing the playback, click on the video with the right button and save as.

Because this button is built-in only on Youtube, go to the Vimeo site and download the video.

Hello, Could you please send a few links you can't download. We will check it out.

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

Hola y gracias por contactarnos. Por favor, bríndenos algunos detalles adicionales con respecto al problema. ¡Gracias!

Hello, how is the name of your browser?