Fix for version 220.127.116.11 Rated 4 out of 5 stars
Mal: As you ask, to get version 18.104.22.168 to work on Firefox 22+, download
to replace the following file
As a good practice, I encourage you to take a backup of the original file, and to inspect the file you have downloaded, for instance by comparing with the original.
A tool to do so is for instance WinMerge (free).
My previous comment with the manual steps to apply the patch is still available from https://addons.mozilla.org/firefox/addon/link-widgets/reviews/482782/