package kismet (not installed) failed to install/upgrade: subprocess installed post-installation script returned error exit status 6

[Qnapp]

the terminal says there are 2 packages that are not fully installed or removed.

ProblemType: Package
DistroRelease: Ubuntu 13.10
Package: kismet (not installed)
ProcVersionSignature: Ubuntu 3.11.0-18.32-generic 3.11.10.4
Uname: Linux 3.11.0-18-generic i686
ApportVersion: 2.12.5-0ubuntu2.2
AptOrdering:
 linux-image-extra-3.11.0-12-generic: Remove
 linux-image-extra-3.9.0-7-generic: Remove
 kismet: Configure
 kismet-plugins: Configure
Architecture: i386
Date: Sun Mar 16 15:05:55 2014
DuplicateSignature: package:kismet:(not installed):subprocess installed post-installation script returned error exit status 6
ErrorMessage: subprocess installed post-installation script returned error exit status 6
InstallationDate: Installed on 2013-07-16 (243 days ago)
InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha i386 (20130626)
MarkForUpload: True
SourcePackage: kismet
Title: package kismet (not installed) failed to install/upgrade: subprocess installed post-installation script returned error exit status 6
UpgradeStatus: No upgrade log present (probably fresh install)

[Nick Andrik (andrikos)]

Hi,

in DpkgTerminalLog.txt there is this message:
usermod: user 'Qnapptop' does not exist

You should specify a user that exists

Kindest regards