Thread:Project:Support desk/Restrict wiki pages

Hello,

running wiki 1.19.1. The wiki is for students of my university to share documents, exam questions and other stuff with each other. However, we do not want our teachers to take a look at those files because they tend to change their questions. For this, we thought on each article we add a sub-article as "Addional material". If you are in a certain group, you should be able to see what lies on this page. If you're not, then you'll receive a text like "You are not authorized" or what ever.

Now I searched for an extention like that and found something: Extension:Page_access_restriction. This was a very promising extension. Since I'm new to wiki, I wasn't quite certain how to patch the files, but I eventually I downloaded Cygwin and patched the files. Unfortunatly, the last working patch was for version 1.17.0. Patching my mediawiki-1.19.1 folder didn't work, so I renamed it to 1.17.0. The patch seemed to work but left a bunch of rejected files. I don't know how to fix this rejected files. Uploading my patched mediawiki leaves me with an error on the main page:


 * Fatal error: Cannot redeclare Title::isRestricted in /home/www/cwcity/hosting/b/i/biosbg/htdocs/includes/Title.php on line 1635

Now I do not know how to continue up to this point. What can I do? Do you know another extension like this but perhaps a little easier and more up to date then this one?

Thanks in advance