" chown -R mq15 /home/Program_Files " etc.
Looks for me, that you just moved or copied the whole
folder ns-allinone-2.32/ from /root/ ? ?
And the "new folder" is
not to be in /home/'new-folder',
but /home/"user"/'new-folder'/ . Else you will have
similar permissions problems again. !
Better start from scratch in another folder with a new
name like /home/mq15/ns2/ to be absolute sure for it
to work.
And please run all commands as the ordinary user. No 'su'.
By the way : The latest version is ' 2.34 '.
And please consider this again :
http://www.linuxquestions.org/questi...ora-11-750634/
→ → post # 13 : Makes everything much much easier. ...

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