Rated 5 out of 5 stars
Thanks for the reply.
* Win 7 Ultimate x64 / FireFox 9.0.1 [PT-BR]
I had to uninstall:
* [Add-ons Manager Dialog Returns 1.0] (https://addons.mozilla.org/pt-BR/firefox/addon/add-ons-manager-dialog-for-ff4)
* [Slim add-Ons Manager] (https://addons.mozilla.org/pt-br/firefox/addon/slim-add-ons-manager)
Only worked when uninstalled the 6.0.4 MR Tech Toolkit (https://addons.mozilla.org/pt-BR/firefox/addon/mr-tech-toolkit/?src=ss), reinstalled it, and then installed the [Addons Manager Hilite].
Congratulations again for your AddOn...
* I am aware of the likely incompatibility FireFox (other addons)