Comment 6 for bug 571392

Here is the log output I found in bug #579643 (that is a dup of this one here):
...
Setting up initramfs-tools (0.92bubuntu78) ...
update-initramfs: deferring update (trigger activated)
cp: cannot stat `/vmlinuz': No such file or directory
dpkg: error processing initramfs-tools (--configure):
 subprocess installed post-installation script returned error exit status 1
Setting up bcmwl-kernel-source (5.60.48.36+bdcom-0ubuntu3) ...
Removing old bcmwl-5.60.48.36+bdcom DKMS files...

-------- Uninstall Beginning --------
Module: bcmwl
Version: 5.60.48.36+bdcom
Kernel: 2.6.32-21-generic (i686)
-------------------------------------

Status: Before uninstall, this module version was ACTIVE on this kernel.

wl.ko:
 - Uninstallation
   - Deleting from: /lib/modules/2.6.32-21-generic/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.

depmod....

DKMS: uninstall Completed.

------------------------------
Deleting module version: 5.60.48.36+bdcom
completely from the DKMS tree.
------------------------------
Done.
Loading new bcmwl-5.60.48.36+bdcom DKMS files...
First Installation: checking all kernels...
Building only for 2.6.32-21-generic
Building for architecture i686
Building initial module for 2.6.32-21-generic
Done.

wl.ko:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/2.6.32-21-generic/updates/dkms/

depmod....

DKMS: install Completed.
update-initramfs: deferring update (trigger activated)
cp: cannot stat `/vmlinuz': No such file or directory
dpkg: error processing bcmwl-kernel-source (--configure):
 subprocess installed post-installation script returned error exit status 1