x-notifier ff 28-29.0.1

This extension was working up till an hour ago, Gmail checkes, yahoo does not, had to keep my logon id signed it for this to work as tmp fix,,, When will this be resolved , yahoo is a  big problem with spoofers and  i am not one that will leave my sing on available... I will not upgrade ff to 29,0,1 because of issues with memory leaks, and various other issues seperate of x.notifier, i use a macbook,mac air,mac book pro and imac running osx 10.9.3 which just had a security update yesterday.. Most of the security issues were itunes,apple tv... Only one incapatible ff extension and that was forecastfox , so i know x-notifier is capatable.. The problem is content being checked it reports yahoo not checked.