- Quit Mozilla. If you have Quick Launch running (in Windows, an icon in the toolbar), quit that too.
- Find your Mozilla profile directory. On Windows, this is often located in
- Open the
user.jsfile from that directory in a text editor. If there’s no
user.jsfile, create one.
- Add these lines to
- Save the file, and restart Mozilla. The Clipboard buttons should now function.
For Linux Shutdown Firefox and then do as instructed above.However in Linux the Firefox preferences folder is in a different place, mine is located in /home/$username/.mozilla/firefox/default then locate the prefs.js and add the lines from above to the bottom of the file. I didn’t need to create or add a user.js to my installation for the problem to cease but perhaps you may.