The FUDforum FAQ:
The zlib files are compressed, hence smaller to download. For details, see http://www.php.net/manual/en/intro.zlib.php
A blank screen means you need to check your webserver's "error_log" file for details of what's going on.
To display errors on-screen, edit your forum's "index.php" file (or the script that causes the error) and add:
error_reporting( E_ERROR | E_WARNING | E_PARSE | E_COMPILE_ERROR ); ini_set ('display_errors', '1');
FUDforum is released under version 2 of the GNU General Public License. In short, this means that FUDforum is free to download, use, distribute and modify. However, if any of these modifications are released to the public, that code must also be released under the same license as FUDforum. The copyright notice in all the source files, however, must be left intact. Any modification or removal of this copyright is illegal under the terms of the GNU General Public Licence.
Yes, you may remove the copyright from the footer, but please don't! If you must, please try to keep at least "Powered by FUDforum" with the link back to http://fudforum.org/ in some form on your forum.