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I have a category called "A 'Bit' of Wisdom" dedicated to various equine bits.  I want to add a sub-category and title it, "The Snaffle Bit".  When I click on "add subcategory" the page "jumps" and does not give me the usual writing field.  I have TWO categories that will not allow me to add sub-categories to...WHAT'S UP WITH THAT??? I NEED to add them.

Thanks,
Beverley