Sitemap generated with Free Online Sitemap Generator worked fine for several months, thank you very much.
Sitemap address: [external links are visible to admins only]
Now Google webmaster tools show a "sitemap not in supported format" error. Sitemap is same as before, in xml-format, uploaded it again after the error message, Google visited again, shows still the same error.
I'd much appreciate any ideas here; the sitemap looks exactly the same as before, tried blinking it with an older version, only the update times are different...
I did upload a .htaccess-file a few days ago; this contains only few simple 301 redirects of single pages from some old page addresses (same domain, different page), all the redirects work fine?