Please reinstall the extension: http://download.sf-helper.com/mozilla/helper_last.html
Delete the cookie caches in the browser

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

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

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

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

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

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

Hello, unfortunately this video download is not technically possible, as it is tied to the country.

Hello, this video is tied to the country, and unfortunately download this video there is no technical possibility.

Hello, the extension Savefrom.Net is absolutely free.

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