I'm running Firebug 2.0.9 in both Mac and Windows, Firefox 37.0.2.F
or two or three days now, in my Extensions update window (on the Mac side), I've been seeing a listing for "Firebug 2.0.9.1-signed Update". What's a "signed update"?
Anyway, every time I click to accept it, there's a progress bar and then an error message that says "There was an error downloading Firebug" and a "Try Again" link. If I click it, the same thing happens.
What's this about?