Problem found and fixed Rated 5 out of 5 stars
I think I found the json download prompt problem in InstantFox. It concerns "json" being mentioned in the setting's "Suggested URL" box. Uncheck "Suggested URL" in each search engine and the nagging download prompt will go away. Why that's in there to begin with is a mystery to me.This review is for a previous version of the add-on (126.96.36.199-signed).