ciao pantera, credo che il tuo problema stia in una errata configurazione del config.php !!! Il file che non si carica è pantera.altervista.org/index.php!
################################################## ####################
# PHP-NUKE: Advanced Content Management System
# ============================================
#
# Copyright (c) 2002 by Francisco Burzi (fbc@mandrakesoft.com)
# http://phpnuke.org
#
# This module is to configure the main options for your site
#
# This program is free software. You can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License.
################################################## ####################
################################################## ####################
# Database & System Config
#
# dbhost: SQL Database Hostname
# dbuname: SQL Username
# dbpass: SQL Password
# dbname: SQL Database Name
# $prefix: Your Database table's prefix
# $user_prefix: Your Users' Database table's prefix (To share it)
# $dbtype: Your Database Server type. Supported servers are:
# MySQL, mSQL, PostgreSQL, PostgreSQL_local, ODBC,
# ODBC_Adabas, Interbase, and Sybase.
# Be sure to write it exactly as above, case SeNsItIvE!
################################################## ####################
/************************************************** *******************/
/* You finished to configure the Database. Now you can change all */
/* you want in the Administration Section. To enter just launch */
/* you web browser pointing to http://yourdomain.com/admin.php */
/* */
/* Remeber to go to Settings section where you can configure your */
/* new site. In that menu you can change all you need to change. */
/* */
/* Congratulations! now you have an automated news portal! */
/* Thanks for choose PHP-Nuke: The Future of the Web */
/************************************************** *******************/
// DO NOT TOUCH ANYTHING BELOW THIS LINE UNTIL YOU KNOW WHAT YOU'RE DOING