Upgraded to 46.0 Fire IE 1.4.6.1 no longer works
I now have a menu item that looks like a lightning flash instead of Fast or Compatible. Clicking on it does nothing. If I place the cursor over the button it says "Left-Click: Switch rendering engine" Right-Click: Show Fire IE Options. Left click does nothing.
Alle svar (2)
You should contact the support for that add-on.
It looks like you are not alone with this problem: https://addons.mozilla.org/firefox/addon/fire-ie/reviews/
If you just need to open pages in IE from time to time, you might try this extension instead: https://addons.mozilla.org/firefox/addon/open-in-ie/