I didn't use FF 17 Rated 4 out of 5 stars

I have another troubles with FF 17 (it incompatible with most Yandex features).
Can I do something with FF 16.0.1 to be able to use 4.1 version? It is very painfull for me - very nice addon, I want to know what is in version 4.1, but I'm forced to use version 3... :(

This review is for a previous version of the add-on (4.1.1-signed).  This user has 3 previous reviews of this add-on.