Quartus 11.1sp2 linux problem

Hi,

I'm trying to install Quartus 11.1sp2 on a centos 6.2 like (scientific linux 6.2) system. This is what I get:

sh ./11.1sp2_259_quartus_free_linux.sh

Creating directory 11.1sp2_259_quartus_free_linux

Verifying archive integrity... All good.

Uncompressing Quartus II Web Edition (Free)...................................................................................................................................................................................................

Welcome to Altera Software Installer

Copyright (c) Altera Corporation 2011

Starting GUI. If nothing shows up, or you don't have an X display, run:

./setup --help

for commandline usage.

NOTE: All output has been redirected to /tmp/altera_setup.log.rUUoHVr6SC

---------

cat /tmp/altera_setup.log.rUUoHVr6SC

Traceback (most recent call last):

File "<string>", line 400, in <module>

File "<string>", line 308, in main

File "<string>", line 395, in validate_options_and_run

File "<string>", line 51, in dispatch_command

File "/build/swbuild/SJ/nightly/11.1sp2/259/l32/work/installers/linux32/build/pyi.linux2/altera_installer_cmd/outPYZ1.pyz/gui_wizard", line 134, in run

File "/build/swbuild/SJ/nightly/11.1sp2/259/l32/work/installers/linux32/build/pyi.linux2/altera_installer_cmd/outPYZ1.pyz/gui_welcome_page", line 66, in __init__

AssertionError

Do you have any idea ?

Franck.