That error is displayed, because the current version of Firebug 3 is not signed yet. Therefore, to install it, you need to go to about:config and set the preference xpinstall.signatures.required to false.
Sebastian On 14 December 2015 at 10:19, Jānis Elmeris <[email protected]> wrote: > I get an error that the add-on has not been verified, so could not be > installed. Is there a way to install Firebug 3 in Firefox 44? > > -- > 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 https://groups.google.com/group/firebug. > To view this discussion on the web visit > https://groups.google.com/d/msgid/firebug/26aba942-bf55-4e8e-9e65-99e7f4802479%40googlegroups.com > <https://groups.google.com/d/msgid/firebug/26aba942-bf55-4e8e-9e65-99e7f4802479%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- 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 https://groups.google.com/group/firebug. To view this discussion on the web visit https://groups.google.com/d/msgid/firebug/CAERejNbT%2B6nv_G7L-_ObuC-ZVNkd19D_BtZM1MuZ0VqS4VBzSw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
