Thanks for reporting, but this is not a bug.
To solve your problem, just open terminal (Applications→Accesories→Terminal)
and use command 'sudo dpkg --configure -a'
** Changed in: firefox (Ubuntu)
Status: New => Invalid
** bug changed to question:
https://answers.edge.launchpad.net/ubuntu/+source/firefox/+question/28516
--
error in update manager
https://bugs.launchpad.net/bugs/185003
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs