Thread:Extension talk:PageAttachment/Error: invalid magic word 'PageAttachment MagicWord NOATTACHMENTS'

Please, can anyone help me with this problem? I have followed the Installation instructions, executed the /rebuildLocalisationCache.php --force but with no success...

Backtrace:


 * 0 C:\Program Files (x86)\Apache Software Foundation\Apache2.4\htdocs\mediawiki\includes\MagicWord.php(236): MagicWord->load('PageAttachment_...')
 * 1 C:\Program Files (x86)\Apache Software Foundation\Apache2.4\htdocs\mediawiki\includes\MagicWord.php(684): MagicWord::get('PageAttachment_...')
 * 2 C:\Program Files (x86)\Apache Software Foundation\Apache2.4\htdocs\mediawiki\includes\MagicWord.php(849): MagicWordArray->getHash

My Installed software Product 	Version MediaWiki 	1.20.3 PHP 	5.4.12 (apache2handler) MySQL 	5.1.66-community-log

Thanks in advance and best regards