I got the latest (50ed226ab9) version of extension and it still does not work:
Fatal error: Call to a member function getHeadItems() on a non-object in /proj/webdocs/wcdma-wrat/root/w/extensions/S5SlideShow/S5SlideShow.class.php on line 371
The example of presentation:
<slideshow>
;title: My Title
;author: Me
</slideshow>
== Slide 1 ==
* Text 1.1
* Text 1.2
== Slide 2 ==
* Text 2.1
* Text 2.2
The extension installed in the following way:
# Slides
// headingmark attribute default value
$egS5SlideHeadingMark = '';
// incmark attribute default value
$egS5SlideIncMark = '(step)';
require_once( "$IP/extensions/S5SlideShow/S5SlideShow.php" );
Versions: MediaWiki 1.20.2, PHP 5.3.21 (apache2handler)
In case if other installed extensions interfere, there are: Collection 1.6.1, Contribution Scores 1.16, External Links 1.1.1, Interwiki 2.2 20120425, Cite (f1b22c4), DynamicPageList 1.6, Graphviz 0.9.1 alpha, ImageMap (da17766), InputBox 0.1.4, MyVariables 3.1.1, ParserFunctions 1.4.1, pChart4mw 1.4.0, SyntaxHighlight 1.0.8.11, UML 0.4, SphinxSearch 0.8.5, Vector 0.3.0, WikiEditor 0.3.1.