A error message generating the SiteMap

[D.O.]

@ Hameau: Thanks for your precious Help!

@ Shawn: I suppose that search engines index the content of my pages anyway 'cause Google shows my site at the top. I think Hameau is right about it can depend on I18N plugin because the button "Generate Sitemap" is linked to this url http://www.mysite.com/admin/load.php?id=...se&sitemap

After I followed the Hameau's tip, the message is now "Sitemap Created! We also successfully pinged 4 search engines of the update" and this is my gsconfig...

PHP Code:

# Ping search engines upon sitemap generation?
#define('GSDONOTPING', 1);

# Disable Sitemap generation and menu items
# define('GSNOSITEMAP',true);