Ubuntu 12.04 package for extlinux install fails with references to "os-proper"

During a regular upgrade to my Ubuntu Desktop 12.04, the upgrade failed with an error:

I: os-proper disabled in /etc/default/extlinux: Skipping /boot/extlinux/os-proper.cfg

The problem comes from several typos in the Ubuntu package extlinux_3%3a6.03~pre9+drbl-1_i386.deb, particularly in the etc/extlinux.d folder of the .deb archive. First of all, the file named 0030-os-proper should be named 0030-os-prober, and the contents of the file 0030-os-prober should be edited to change any instances of "os-proper" to "os-prober" in that file. In addition, the conffiles file should be changed to reflect the change of filename from 0030-os-proper to 0030-os-prober.

I have made the changes to my local package and the install proceeds correctly. I have also notified the software creator via email.

A corrected version of the package is attached.