Errin when executing a cgi script that sets a cookie in the browser

[Νικόλαος Κούρας]

Since the other thread gone into the wild, i choosed not to participate any longer and i state the question in this new thread.

'python files.py' interprets without an error.
Problem is that when via browser - http://superhost.gr/cgi-bin/koukos.py
i receive the following:

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root at nikos [/home/nikos/www/cgi-bin]# ls
./  ../  convert.py*  files.py*  .htaccess  koukos.py*  metrites.py*  pelatologio.py*

root at nikos [/home/nikos/www/cgi-bin]# tail -F /usr/local/apache/logs/error_log &

root at nikos [/home/nikos/www/cgi-bin]# [Wed Jun 05 22:47:43 2013] [error] [client                                                                                         79.103.41.173] (2)No such file or directory: exec of '/home/nikos/public_html/c                                                                                        gi-bin/koukos.py' failed
[Wed Jun 05 22:47:43 2013] [error] [client 79.103.41.173] Premature end of scrip                                                                                        t headers: koukos.py
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What file does the error complain it cannot find? I do not understand its message. Here is the code of koukos.py


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#!/usr/bin/python
# coding=utf-8

import cgitb; cgitb.enable()
import cgi, os, sys, locale, codecs
from http import cookies

#needed line, script does *not* work without it
sys.stdout = codecs.getwriter('utf-8')(sys.stdout.detach())

# initialize cookie
cookie = cookies.SimpleCookie( os.environ.get('HTTP_COOKIE') )
cookie.load( cookie )
nikos = cookie.get('nikos')

# if visitor cookie does exist
if nikos:
	message = "ΑΠΟ ΤΗΝ ΕΠΟΜΕΝΗ ΕΠΙΣΚΕΨΗ ΣΟΥ ΘΑ ΣΕ ΥΠΟΛΟΓΙΖΩ ΩΣ ΕΠΙΣΚΕΠΤΗ ΑΥΞΑΝΟΝΤΑΣ ΤΟΝ ΜΕΤΡΗΤΗ!"
	cookie['nikos'] = 'admin'
	cookie['nikos']['path'] = '/'
	cookie['nikos']['expires'] = -1		#this cookie will expire now
else:
	message  = "ΑΠΟ ΔΩ ΚΑΙ ΣΤΟ ΕΞΗΣ ΔΕΝ ΣΕ ΕΙΔΑ, ΔΕΝ ΣΕ ΞΕΡΩ, ΔΕΝ ΣΕ ΑΚΟΥΣΑ! ΘΑ ΕΙΣΑΙ ΠΛΕΟΝ Ο ΑΟΡΑΤΟΣ ΕΠΙΣΚΕΠΤΗΣ!!"
	cookie['nikos'] = 'admin'
	cookie['nikos']['path'] = '/'
	cookie['nikos']['expires'] = 60*60*24*30*12		#this cookie will expire in a year


print( cookie, "Content-type: text/html; charset=utf-8\n", message )

sys.exit(0)
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All it tries to do is to set a cookie.