terminl shows "Segmentation fault(core dumped)" while opening nam

[Azhar Khurshid]

I installed nam, ns2, xgraph via terminal. Now nam won't open, although xgraph is installed correctly.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: gnome-terminal 3.16.2-1ubuntu4
ProcVersionSignature: Ubuntu 4.2.0-30.36-generic 4.2.8-ckt3
Uname: Linux 4.2.0-30-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Mar 7 15:39:48 2016
ExecutablePath: /usr/lib/gnome-terminal/gnome-terminal-server
InstallationDate: Installed on 2014-09-23 (530 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/bash
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 LANG=en_IN
SourcePackage: gnome-terminal
UpgradeStatus: Upgraded to wily on 2016-02-26 (9 days ago)