
There's a "contact" link on the extension homepage, If that doesn't work (if there is no button for your extension) then I would post a comment at or else notify the extension developer. The Customize Firefox controls, buttons and toolbars article has details. Drag it onto the toolbar where you want it to appear.Look for the missing button for your extension.Right-click an empty section of the Tab Strip.If your extension is installed and enabled but a button needed for the extension to work is missing, see if you can add the button to Firefox using the "Customize Toolbar" window: See the Use the Troubleshooting Information page to help fix Firefox issues article for details. It will include a list of installed extensions. You can go to the Firefox Help submenu and open the " Troubleshooting Information" page, then click the " Copy text to clipboard" button and paste the information here. You wrote, I do not know how to include the current list of extensions installed in this section. Read this answer in context 👍 3 All Replies (8) All I can say is that this 7.20 version does work! The developers of Easy YouTube Video Downloader Express 7.20 state in the text of their extension that they have managed to overcome the problems caused by YouTube's changes in this version.

This has apparently caused many video downloader add-ons to fail. PS - Having now done a little research, it would appear that YouTube has recently made some changes to prevent professional concert videos being downloaded. How do you wish me to proceed with this message stream as although your suggestions didn't work, the issue has now been resolved by using a different extension, bearing in mind that any response I receive from 1-click YouTube Download developer would be best posted here? I have now resorted to finding an extension that does work and although I did this exercise the other day without success, I have now installed "Easy YouTube Video Downloader Express 7.20", which does show a more subtle Download button in Green but in a slightly different place on the YouTube Video page, so instead of to the right of Subscribe button, it is underneath.

I have, as suggested, sent an email to the developer and if I do receive a response from them, I will post it to this question.

I did Disable all other Extensions and restart Firefox, but unfortunately this made no difference, even though it did work originally.
