Thread:Extension talk:FlaggedRevs/Updating FlaggedRevs leads to PHP error

After successfully upgrading to Mediawiki 1.21 FlaggedRevs produced a PHP error, so I decided to update FlaggedRevs, too.

Unfortunately, I get the following PHP errors:

PHP Notice: Undefined property: SkinMonoBook::$mTitle in D:\Programme\Apache Software Foundation\Apache2.2\htdocs\w\extensions\FlaggedRevs\FlaggedArticleView.php on line 989 PHP Fatal error: Call to a member function isTalkPage on a non-object in D:\Programme\Apache Software Foundation\Apache2.2\htdocs\w\extensions\FlaggedRevs\FlaggedArticleView.php on line 989

Can anyone help? Thanks in advance.

Martin