Stuck in update

[Alan Greenberger <alanjg@ptd.net>]

This morning I tried to update a wheezy recently upgraded from squeeze.
It didn't work and I am stuck.

# aptitude update
# aptitude
 g
 u
 These packages could be upgraded, but they have been kept in their
 current state to avoid breaking dependencies.
 q
 b (just beeps)

There were some error messages about lilo
# dpkg -l lilo
 iF  lilo           1:23.2-4     amd64
# aptitude
 /lilo
 C     lilo                                         1:23.2-4       1:23.2-4 

# dpkg-reconfigure lilo
 /usr/sbin/dpkg-reconfigure: lilo is broken or not fully installed

# aptitude install debsums
   debsums libfile-fnmatch-perl{a} 
The following partially installed packages will be configured:
  lilo
 ...
 Errors were encountered while processing:
 lilo

# debsums lilo
 debsums: package lilo is not installed

# aptitude reinstall lilo
The following packages will be REINSTALLED:
  lilo 
0 packages upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 50
 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
E: Internal Error, No file name for lilo:amd64

# apt-get --reinstall install lilo
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 50 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
E: Internal Error, No file name for lilo:amd64

After this I updated another computer with a less recently upgraded
wheezy using the same sources.list .  It completed smoothly.

So I am stuck.  It did allow installation of debsums from the aptitude
command line, but interactive aptitude won't do anything.  Any ideas?