Thread:Project:Support desk/Upgrading a VERY old installation.../reply

Given that you also have to update MySQL and PHP in order to finally use MediaWiki 1.20.2, upgrading MediaWiki itself in several steps is good.

You say with MediaWiki 1.14.1 your links do not work correctly. How does that problem exactly look like? I guess that one of the configuration variables in LocalSettings.php is not set (maybe because it did not exist yet in MW 1.4.5). E.g. $wgServer is one of these variables.