A change in error handling apparently causes some
extensions to break (
http://lists.wikimedia.org/pipermail/mediawiki-l/2007-September/023348.html).
Disable the extension, contact its author and ask him to fix the problem, or
fix the problem yourself
How do I know which extension it is? Is it the general
ParserHooks
extension, or something else? It doesn't seem very clear from the error.
-Azurite