Some games require FastDL to be case insensitive, apache2 is case sensitive by default. Enabling apache2 mod_speling ignores case sensitivity on a LAMP stack. This guide applies to debian and ubuntu. At the bottom of this page are external guides that include CentOS/Fedora. This workaround will not work on shared webhosting where editing apache2 files is not available.
service apache2 restart
Apache needs to be told which directories mod_speling is applied to, open the webserver's .conf file located inside /etc/apache2/sites-available/ and set AllowOverride to All.