PHP settings (magic_quotes, register_globals etc)

Versions 0.9.x and above require the following settings to be off:

register_globals
magic_quotes

You can check the settings on your server by running phpinfo(). The setup script won't allow you to proceed until you have turned them off. If you are running php as an apache module then the .htaccess file in the root of the ladder installation will try to turn them off. If php isn't running as an apache module you can try putting a php.ini file in the root of your ladder installation (there's a sample version in the setup directory). If this doesn't work and you are in a shared hosting environment you may have to ask you host's admin to turn the settings off for you.