Thread:Project:Support desk/Some Special: pages won't display in version 1.22.2 Apache Win 7

MediaWiki 1.22.2 / PHP 5.3.10 (apache2handler) / MySQL 5.5.20

Some Special:* pages won't display in version 1.22.2, especially Special:SpecialPages. The only sign of a problem is the following message in Apache error log:

Some Special: pages seem OK such as Special:ListUsers or Special:Version, others just won't display at all.