Google webmaster tools is showing 46 "not found" errors, all of which are category pages (with the format domain.com/category/category-name/page-name).
My site is about 170 posts in total, and has been up about 5 months.
I've got all my category pages set to "no index no follow" using Robots Meta, so I would have thought Google should not be looking at them anyway.
How do I fix this problem and prevent it happening again?
thanks in advance for any help with this, it's got the site totally de-indexed from Google, and I need to get it fixed!