Thread:Project:Support desk/Updated to 1.21.2; all article pages returning "No Such Action"

I just updated my wiki from 1.21.1 to 1.21.2 and now all article pages, including Main_Page, are returning "No such action". Special: pages and other parts of my wiki seem to be working normally. I'm not sure where to start looking to troubleshoot.

MediaWiki: 1.21.2

PHP: 5.3.13 (cgi-fcgi)

MySQL: 5.0.37-standard

URL: http://clantitan.org/rpwiki/