I have a request. There are Xmap and ArtioJoomSEF in use. But Xmap does not make XML map, it just write "This sitemap is unavailable". I don't know how to solve this error.
I've found a topic related to this problem in Xmap official forum, but author's answer was next:

"this seems to be a problem with joomfish!"

P.S. I use latest JoomFish 1.8.2, ArtioJoomSEF 2.2.6 and Xmap 1.0