Thread:Project:Support desk/References don't work anymore/reply (5)

It is hard to tell, if you are still missing extensions, which should be installed. Since you say that you did an upgrade, you should basically just continue using your old LocalSettings.php file. It is largely backwards-compatible and using it you will still (or again) have all the extensions installed, which you also had before.

If these extensions do not come with the MediaWiki package, then you might still need to download the fitting version from the extension page here on mediawiki.org.