No longer working well Rated 3 out of 5 stars
Used to like this a lot- thanks to the author. It's now become poor sadly and I've removed it. I think it's clashing with Flash or other temporary stored material.
If you are wanting to send (launch) an image then try Image Assistant https://addons.mozilla.org/en-US/firefox/addon/790 That is excellent. It previews the image in WIndows's image viewer and then you can right click to edit in Paint.
I'm also using the old Send To http://mfe.gorgias.de/ for sending text to Notepad. You have to disable FF's checking compatibility but it works perfectly. I've not found an Addon that was as well.
What are other people using? :-)