Pretty permalinks is not working on my site. It returns a 404 error for all single pages, and a function.preg-match error on the blog. The function error appeared after updating WP-ecommerce plugin today... which I need, so I can't just turn it off. I have been ripping my hair out all morning trying to find the source of the single post page issue, but haven't found it.
Any ideas about how to fix this? Right now I have it on default settings and those problems go away. That of course causes a whole host of other problems though... Switching to default and back doesn't work. VERY frustrating!
Site is liskabora.com