could not install xulrunner-1.9.1 the upgrade will continue but the xulrunner-1.9.1 package may be not be in a working state

[John]

Binary package hint: xulrunner-1.9.1

I was upgrading to ubuntu 9.10 from 9.04 and I got the error message "could not install xulrunner-1.9.1 the upgrade will continue but the xulrunner-1.9.1 package may be not be in a working state."

ProblemType: Package
Architecture: amd64
Date: Wed Dec 30 20:55:43 2009
DistroRelease: Ubuntu 9.10
ErrorMessage:
 ErrorMessage: subprocess installed post-installation script returned error exit status 2
NonfreeKernelModules: nvidia
Package: xulrunner-1.9.1 1.9.1.6+nobinonly-0ubuntu0.9.10.1
ProcVersionSignature: Ubuntu 2.6.28-17.58-generic
SourcePackage: xulrunner-1.9.1
Title: package xulrunner-1.9.1 1.9.1.6+nobinonly-0ubuntu0.9.10.1 failed to install/upgrade:
Uname: Linux 2.6.28-17-generic x86_64