[Bug 34490] Postinst and postrm fail to complete leaving dpkg in a broken state

[Yann]

Public bug report changed:
https://launchpad.net/malone/bugs/34490

Comment:
I removed update-mozilla-* script from postrm and postinst and the
package as, from what I read,  theses scripts should not be necessary
anymore.

The package installs correctly and works in firefox, however it doesn't
seem to be correctly take in account by thunderbird...