Thread:Project:Support desk/Broken "next 200" link on category page?/reply (4)

That's an odd issue.

I had a look at the api output for your site (|sortkeyprefix|title|ids) and it outputted things the way they're supposed to look. If it was a db issue, the output would probably look wrong for the api (sortkeyprefix being "" is normal in that api output in case you're wondering).

What seems to be the problem is that the category page is just not responding to url parameters. However, it is responding to the older url parameters for categories.

Theory 1:
 * Wrong version of CategoryTree. Older versions of Category tree break categories in weird ways on newer mediawiki. Make sure you have the version of CategoryTree that goes with MediaWiki 1.18. If you're not sure, temporarily disable that extension, see if the categories fix themselves, that way you could rule it out if its being caused by that extension.

Theory 2
 * Maybe One of the files in your install was not updated properly (although, if that happened I'd imagine more things would be broken). Could you check that includes/CategoryPage.php in your install is exactly the same as the official version - http://svn.wikimedia.org/svnroot/mediawiki/tags/REL1_18_0/phase3/includes/CategoryPage.php (especially the closeCategory method ) [However, check the categorytree thing first].