I have a problem with ParserFunctions extension. I need to install ParserFunctions extension because in a wikipedia mirror i continue to have strange words in the output (here for example : http://encyclopedia.meta99.com/wiki/Dogs and here http://encyclopedia.meta99.com/wiki/Cats ). A supported told me that "ParserFunctions extension is installed on ALL Wikimedia web sites and allows simple expression matching". The problem is that i have NOT found it in the script i have download here : http://meta.wikimedia.org/wiki/MediaWiki_1.6 I have installed the ParserFunctions following the instructions i have found here : http://meta.wikimedia.org/wiki/ParserFunctions Installation Download both of these files and put them in a new directory called ParserFunctions in your extensions directory. Expr.php ParserFunctions.php Then put the following at the end of your LocalSettings.php: require_once( "$IP/extensions/ParserFunctions/ParserFunctions.php" ); -------------- BUT I HAVE THE ERROR : http://encyclopedia.meta99.com/wiki/Cats Warning: Missing argument 2 for wfParserFunctionsLanguageGetMagic() in /home/httpd/vhosts/encyclopedia.meta99.com/httpdocs/extensions/ParserFunctions/ParserFunctions.php on line 144 -------------- HERE : http://meta.wikimedia.org/wiki/Talk:ParserFunctions#Unable_to_install_2 Many other user has the same identical problem. Without solution at the moment. Can somebody help me. I can post the solution here : http://meta.wikimedia.org/wiki/Talk:ParserFunctions#Unable_to_install_2 For future reference. I'm also a newbie....