Wiki (MediaWiki)

I tried installing MediaWiki 1.13.2 but hit a few bump. The install seemingly went fine but if you go to mediawiki-1.13.2 in your browser it turns up blank?

How do you debug that?

Ok, it turned out I was being a bit dumb so now the wiki works and you can use your forum user id to log in:
http://freetrain.sourceforge.net/wiki/

Also you need to be a member of the Wiki group to edit pages, so if you want access, ask. The usual suspects are already in it.