I have a woo theme, Fresh News. I have 4 pages and I had 4 categories. I originally had a "self-esteem" sub category in the personal development catetory. I decided to add a sub category "self-esteem" to both the personal development category and the parenting category. I've learned that I can only have one self esteem category. I should have learned before I did this but, every time I added self esteem to another category, It added more and more of the same category. Then I deleted all the categories. Now when I put in a new category, it won't show up on my site.