Rated 1 out of 5 stars
I have tried to install this add-on as well as the page validator tool from Michael Langley with FireFox 3.6.10. After the install and FireFox restarts, the validators are not working. Under tools and add-ons when clicking on these specific validators the options buttons are greyed out and when right-clicking on a page that contains css neither validation add-on is available in the right-clicked menu. Does anyone know if this is a compatibility issue or if its a bug with the developers site? Also, when installed it does say that the add-on is compatible but it's still not working.