Mediawiki: BlogPage extension not showing up in Special:Version

Question

I have installed the BlogPage extension & other required extensions like Comments, SocialProfile and Votes in mediawiki and changed Localsettings.php like this:

require_once "$IP/extensions/SocialProfile/SocialProfile.php";
require_once "$IP/extensions/Comments/Comment.php";
$wgGroupPermissions['*']['commentlinks'] = true;
require_once "$IP/extensions/VoteNY/VoteNY.php";
$wgVoteDirectory = "$IP/extensions/VoteNY";
require_once "$IP/extensions/BlogPage/BlogPage.php";

& updated wiki after that. In my Special:Version page all the extensions other than BlogPage are listed.Why is that? As the extension page says I navigated to Special:CreateBlogPost and got this error:
"No such special page.You have requested an invalid special page."
Please help me solve this problem.

Wiki Details
MediaWiki 1.23.2
PHP 5.3.3 (apache2handler)
MySQL 5.1.73

Answer 1

The installation instructions are wrong; I’ve fixed them.

Replace this line…

require_once "$IP/extensions/BlogPage/BlogPage.php";

… with this line:

require_once "$IP/extensions/BlogPage/Blog.php";