Last modified: 2008-10-28 09:39:34 UTC
This might be because I'm using MW 1.13.2 and the ''trunk'' version of CT, to be fair. But I thought I'd let you know anyway. I got round the problem by renaming my categories, so would prefer not to spend time reinstalling CT (the 1.13 version) - could do if you ask, though. Best wishes.
Update: I have another category/subcategory pair like this, and the problem doesn't arise. The problem got fixed straight after changing the name, as described - so I honestly don't know what caused it. Sorry.
Can't reproduce, closing as worksforme for now.