Thread:Project:Support desk/Fatal PHP error when running update.php

Hi,

I'm testing an upgrade of a MediaWiki 1.15.1 to 1.21.0 on a locally installed virtual web server. I'm using Apache 2.2.22, PHP 5.3.17, and MySQL 5.5.30. After copying the new files over the old ones I run the maintenance/update.php from the command line. It gets part way through the update process then fails with the following error: ...batch conversion of user_options: PHP Fatal error: Unsupported operand types in /web/wiki/htdocs/languages/Language.php on line 495 Any idea what might be going wrong?

Thanks.

Erik