If you've updated recently it might be the signed addons that the newer version force.
about:config xpinstall.signatures.required set to false On Sunday, August 23, 2015 at 7:33:23 PM UTC+1, rupali dash wrote: > > > -- You received this message because you are subscribed to the Google Groups "Firebug" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/firebug. To view this discussion on the web visit https://groups.google.com/d/msgid/firebug/82918058-619f-4b77-8f86-87cd17c3bb88%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
