Does not work at all on Firefox18 Rated 5 out of 5 stars

Does not work at all any more.
Does not work at all on Firefox18 (or 18.01 and 18.02.
I tested with no ffaddons and no plugins. WindowsVista.
It used to work great and so I am giving it a 5 star rating for that reason.
But I will change my rating to 0 if it is not fixed soon.
Please fix soon thankyou.