This works, but only for the session in which you install it. To get it to work in a new session, uninstall and reinstall it

Same here. Tried to disable all other extensions just in case there was some interference but Fuskr doesn't work. Right click on images that contain numbers does not show any Fusk menu

Couldn't make this work. Instructions indicate right clicking to use. Did not appear to work.

Doesn't work. Right click all you want. No "Fusk" option anywhere.