package gnome-icon-theme 2.31.0-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[ET900]

this was just an error that appeared while trying to revert back to gnome2 from a gnome3 trial install. not sure if its actually a bug.

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: gnome-icon-theme 2.31.0-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Sat Aug 20 18:24:10 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationMedia: Ubuntu-Studio 11.04 "Natty Narwhal" - Release amd64 (20110426.1)
PackageArchitecture: all
SourcePackage: gnome-icon-theme
Title: package gnome-icon-theme 2.31.0-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

thank you for your bug report but downgrading from unofficial ppa is not supported and not a distribution bug, you can probably workaround it by reinstallaing the oneiric gnome-icon-theme version