package kismet 2013.03.R1b-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 6

[Rana Muhammad Waqas]

Errors were encountered while processing:
 kismet
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 13.10
Package: kismet 2013.03.R1b-1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
Date: Fri Oct 18 03:50:03 2013
DuplicateSignature: package:kismet:2013.03.R1b-1:subprocess installed post-installation script returned error exit status 6
ErrorMessage: subprocess installed post-installation script returned error exit status 6
InstallationDate: Installed on 2013-10-08 (9 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: kismet
Title: package kismet 2013.03.R1b-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 6
UpgradeStatus: Upgraded to saucy on 2013-10-18 (0 days ago)

[Nick Andrik (andrikos)]

in DpkgTerminalLog.txt there is:

usermod: user 'Waqas' does not exist

Please specify a valid user