Well there's quite a few people having crashes with FF 25+ (at least over at the Mint forums). Either way I've tried to make my own ESR deb with mozillapackager. When asking for a version I said latest-esr ; it downloaded but I had to add the 15A0A4BC gpg key (public key not found).
During extraction I got the following error:
Same when I tried "latest".
[sudo] password for alad:
Creating Applications menu item for Firefox.
dpkg-deb: error: parsing file 'debian/DEBIAN/control' near line 2 package 'firefox-mozilla-build':
error in 'Version' field string 'latest-esr-0ubuntu1': version number does not start with digit
dpkg-deb --build debian /media/data/Downloads/ubuntuzilla-mozillapackager-9d31da2c64f5041a4954f6c8f9ccce97b600a84d
Previous command has failed to complete successfully. Exiting.
Process returned code 2
Traceback (most recent call last):
File "mozillapackager.py", line 737, in <module>
File "mozillapackager.py", line 243, in start
File "mozillapackager.py", line 304, in start
File "mozillapackager.py", line 549, in createDeb
self.util.execSystemCommand('dpkg-deb --build debian ' + self.options.debdir)
File "mozillapackager.py", line 149, in execSystemCommand
raise SystemCommandExecutionError, "Command has not completed successfully. If this problem persists, please seek help at our website, " + self.version.url
__main__.SystemCommandExecutionError: Command has not completed successfully. If this problem persists, please seek help at our website, http://ubuntuzilla.sourceforge.net/