Plugin: Google Sitemap 3.0b1 by Arne Brachhold, on WordPress 2.01
When I rebuild the sitemap, it opens a save/open file dialog for "options.php"
If I modify or write a post, it opens a save/open file dialog for "post.php"
The writable xml file is in the correct location. Sitemap.php is in the plugins directory, is active and has its own Options section.
The same behaviour for Google Sitemap ver. 2.71
Other plugins work fine.
Do you have any hint?