package grub-pc 1.97~beta4-1ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[quazar]

Binary package hint: grub2

it was in the middle of updating grub and I clicked to look at the diff of the 2 config files side-by-side; the diff came up on the screen just fine; then I think I accidentally clicked Forward (trying to resize the window) and that's when the error popped up

ProblemType: Package
Architecture: amd64
Date: Fri Nov 6 15:59:40 2009
DistroRelease: Ubuntu 9.10
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
NonfreeKernelModules: nvidia
Package: grub-pc 1.97~beta4-1ubuntu4
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: grub2
Title: package grub-pc 1.97~beta4-1ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
Uname: Linux 2.6.31-14-generic x86_64