package ushare 1.1a-0ubuntu5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127

[Gregg Stewardson]

Binary package hint: ushare

ushare works for me. Looks like the system is reporting that it did not install/upgrade

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: ushare 1.1a-0ubuntu5
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
AptOrdering:
 medibuntu-keyring: Install
 ushare: Configure
 medibuntu-keyring: Configure
Architecture: i386
Date: Fri May 20 23:58:49 2011
DpkgTerminalLog:
 Unpacking medibuntu-keyring (from .../medibuntu-keyring_2008.04.20_all.deb) ...
 Setting up ushare (1.1a-0ubuntu5) ...
 /etc/ushare.conf: 22: BOOK: not found
 dpkg: error processing ushare (--configure):
  subprocess installed post-installation script returned error exit status 127
ErrorMessage: subprocess installed post-installation script returned error exit status 127
SourcePackage: ushare
Title: package ushare 1.1a-0ubuntu5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127
UpgradeStatus: Upgraded to natty on 2011-04-29 (24 days ago)