The problem could be another extension conflicting with Firebug. To check
that out deactivate all extensions except Firebug and try it again. If it
works, reactivate the extensions one by one and try it out again to find
the one that is causing the problem.
On Thu, Oct 11, 2012 at 8:51 AM, krishnaveni1001 korumalli <
> i am using the firebug latest version 1.10.4 and my FF is 15 version
> i am unable to create, delete, or edit HTML attributes and text just by
> clicking them.
> what could be the problem...