XAMPP 1.8.1 portable on Windows 32bit XP SP3, MediaWiki 1.20.2, PHP 5.4.7, MySQL 5.5.27. The wiki is on a USB flash drive (localhost). I've added the .dll from windows.php.net/downloads/pecl/php_apc-3.1.13-5.4-ts-vc9-x86-xp.zip to xampp\php\ext with extension=php_apc.dll in php.ini. Some info for APC is now in phpinfo(). In LocalSettings.php I have $wgCacheDirectory = "$IP/cache"; and $wgMainCacheType = CACHE_ACCEL; when I browse to the wiki's main page I get "Fatal error: require(): Cannot redeclare class profiler in path...\AutoLoader.php on line 1145".
Version: 1.20.x
Severity: major