[Mediawiki-l] Internal Error: Parser::replaceInternalLinks: after enable $wgUseAjax

[Swen Wacker]

Hi,

I've install an new mediawiki without any errors

MediaWiki <http://www.mediawiki.org/>: 1.8.2
PHP <http://www.php.net/>: 5.1.2 (cgi)
MySQL <http://www.mysql.com/>: 4.1.19-standard

The tables are emtpy. No import has down till now. The first and only 
change in Localsettings.php has been this copy from 
include/defaultsetting.php
$wgUseAjax = false;
$wgAjaxSearch = false;
$wgAjaxExportList = array( );

Then replace "false;" by  "true;" and ad "wfSajaxSearch" to 
$wgAjaxExportList)

$wgUseAjax = true;
$wgAjaxSearch = true;
$wgAjaxExportList = array( wfSajaxSearch );

Now it is not possible to search for an article. After writing some 
letters in the searchbox (no matter if the Article exist or not) a 
message pop up:

Error: 500 Internal Error: Parser::replaceInternalLinks: $this->mTitle 
is null

Any Ideas what I have done to my brand new wiki?

Swen