data URL patch for version 18.104.22.168 Rated 4 out of 5 stars
Here is a solution for the "Plus One Button - Firefox Add-On" version 22.214.171.124 that stopped working today due to the dependency on making an external request to https://www.schloebe.de which seems down due to a DNS problem or similar.
To solve the problem and avoid similar issues in the future, I suggest using a local data:URL instead, which does not need a third-party server.
This is done in the file "%AppData%\Mozilla\Firefox\Profiles\[...]\extensions\firstname.lastname@example.org\chrome\content\ff-overlay.js" (XPI is a ZIP archive), by replacing the function onPanelOpen() from line 53 by the following:
All the best,
Thanks, I'll add your code to the updated version.