Is your osticket a fresh installation of 1.7 or did you upgrade from 1.6? There were some problems regarding the FAQ when upgrading from 1.6 (see http://osticket.com/forums/showthread.php?t=13827(http://osticket.com/forums/showthread.php?t=13827)). If that isn't the case, set the following 2 variables in main.inc.php
ini_set('display_errors', 0);
ini_set('display_startup_errors', 0);
To
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
Afterwards check if you get any errors when visiting Knowledgebase sites.
I just did a fresh install of my osticket mod on an arm based server and the Knowledgebase worked there too. Did anyone else have such problems?