Hey, I'm having the exact same problem but I can actually make the posts no problem. I read on a Russian site(thanks to google's translate) that a possible fix was some patch however it seemed to make my problem worse at times and may be an older version. I know that the offending categories have spaces in their names e.g.  "Our Hottub" and that could be attributed to a couple of different things that I can think of involving how it translates the spaces among a couple other things.