[mod_python] python_handler: Can't get/create interpreter

Hello,

maybe i have a bad mod_python install on a RHEL 4.5.

I compile apache, mod_python and python, and install all  inside /freeware
(it's a customer need).
- /freeware/python-2.5.4/
- /freeware/apache-2.2.6/
When run, apache use a linux user call "web".

Version :
- apache 2.2.6
- mod_python 3.3.1
- python 2.5.1 (and test with the last 2.5.4)

I try this example ( because i have some error with the Pylons application
that i have to install) :
http://www.modpython.org/live/current/doc-html/inst-testing.html

When i try to access  to http://server/test/mptest.py i have a 500 server
error.

When i look at log i have (for each request) :
[Thu Feb 26 19:46:29 2009] [error] [client X.X.X.X] python_handler: Can't
get/create interpreter

this the only message inside error log....

I try to re compil apache mod_python and python but i don't find any
solution.

I try the same thing with a distribution packages (python, mod_python and
apache) install on ubuntu hardy and it's works.... (just to say that i'm not
too stupid)!

I have nos idea... this my virtual host apache.conf content include inside
the main conf file :
<VirtualHost *:80>
    ServerAdmin webmaster at dummy-host.example.com
    DocumentRoot "/dataweb/sws"
    ServerName dns
    ErrorLog "/dataweb/sws/logs/sws-error_log"
    CustomLog "/dataweb/sws/logs/sws-access_log" common

<Directory /dataweb/sws/test>
        Options None
        AllowOverride None
        Order allow,deny
        Allow from all
        AddHandler mod_python .py
        PythonHandler mptest
        PythonDebug On
        #PythonPath "sys.path+['/freeware/python-2.5.4/bin']"

</Directory>
SetEnv LD_LIBRARY_PATH /freeware/python-2.5.4/lib/python2.5/:/freeware/lib/


</VirtualHost>

need help please.

thanks in advance.

fred
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