Would you like to try again and tell us which version you installed?
Also 1.9.x doesn't use settings.php. osTicket hasn't used settings.php
since like 1.6ST (4-5 years ago). It uses ost-config.php. Is this
actually a new installation or an upgrade?You might try enabling error display in osT. You can do this following these instructions: http://tmib.net/osticket-v19x-frequently-asked-questions-faq#2