I have a blog with 80 categories, all work fine, with the usual http://www.domain.com/category/name/
But 4 of them don't work, and redirect to the index page. I've done everything, the category name is simple: migraines
If I go to domain.com/?cat=68 there it is... but with the pretty name I get redirected to the homepage.
Maybe some glitch in the database? Why does only cat 68,69.70 and 71 don't work?
If I click on other category names, they work.