Sitemap not build with 777

I have chossen either /droot/sitemap and /droot/forum/sitemap, both set to the user this domain belongs to and both set to 777,
but the script wont write my sitemap-files.

Any idea what could be wrong?

Please post support queries for DragonByte SEO Pro in this forum: http://www.dragonbyte-tech.com/f239/

Thanks