ASPELL EXECUTION FAILED

Hello,

I'm testing ASPELL as OpenCMS (FCKEditor) spell checker in RedHat Linux.
I've installed the Speller Pages in my home and in both of our development
enviroments, following the steps of this tutorial
(http://mail.opencms.org/pipermail/opencms-dev/2006q2/024532.html) and it
worked perfectly. But, when we tried to do the same in our Testing
enviroment, it fails.

The configuration is the same for all the machines. When we try to execute
the spell check, it says:
SYSTEM ERROR: "Aspell program execution failed ('/usr/bin/aspell -a
--lang=es --enconding=utf-8 -H </tmp/aspell_data_jekYTi 2>&1"

If we execute the same command from the console, it works alright. I also
try changing the enconding but no luck.

Do you have any idea what could be wrong with this?

Best regards,
Hernán.