Do you download the video after opening the tab?

The tab can be closed.

Hello, what is the name of your browser?

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

Thank you for using our extension SaveFrom.net Helper

Works. Reinstall the extension:

https://en.savefrom.net/savefrom-helper-for-google-chrome.php

Hello, Reinstall the extension after an older version is uninstalled. The current version is 8.15:

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

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, this extension has been fixed. Please, update or reinstall it from our site.
The latest version is 8.15: http://en.savefrom.net/user.php#helper_install
Thank you for using Savefrom.Net browser extension

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