package linux-image-2.6.37-12-generic-pae 2.6.37-12.26 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[Eric Casteleijn]

Binary package hint: initramfs-tools

dist-upgrading left my system in a non-booting state. After booting with 2.6.37-11, Unity won't start and this bug report was generated.

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.37-12-generic-pae 2.6.37-12.26
ProcVersionSignature: Ubuntu 2.6.37-11.25-generic-pae 2.6.37-rc7
Uname: Linux 2.6.37-11-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Mon Jan 10 11:26:59 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
SourcePackage: initramfs-tools
Title: package linux-image-2.6.37-12-generic-pae 2.6.37-12.26 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2