package python-ptyprocess 0.5-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 139

[Russ]

Installing rkhunter when error report was generated.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: python-ptyprocess 0.5-1
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Thu Apr 21 20:24:22 2016
Dependencies:

DuplicateSignature:
 Setting up python-ptyprocess (0.5-1) ...
 Segmentation fault (core dumped)
 dpkg: error processing package python-ptyprocess (--configure):
  subprocess installed post-installation script returned error exit status 139
ErrorMessage: subprocess installed post-installation script returned error exit status 139
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: ptyprocess
Title: package python-ptyprocess 0.5-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 139
UpgradeStatus: No upgrade log present (probably fresh install)