Thread:Extension talk:Include/It does not work: Warning: Parameter 3 to render include() expected to be a reference solved

If your browser log file shows [error] PHP Warning: Parameter 3 to render_include expected to be a reference, value given in .../includes/parser/Parser.php on line 3333

you need to apply the

patch for PHP 5.3.x

 * tested for MediaWiki trunk 1.19alpha (r88557) and PHP 5.3.6