Don't output anything if no nodes available

Did you find the reason for that, I'm facing this problem on my site.
Thanks

I too am having this problem. xmlsitemap is working fine, but googlenews is not.
Funny though, googlenews.xml was working fine yesterday when I submitted it with Google Webmaster Tools.
I have a strange feeling that I botched this sitemap stuff by using Google Webmaster Tools.
Anybody shed some light?
I will go through the documentation again and post my findings.

having the same issue... any thoughts?

thanks,
ephman

I'm thinking it's because we currently do not have any content that was created in the last two days. . . Maybe when there is nothing to put in the sitemap, this error is thrown?

Confirmed, this is because the sitemap does not have any entries in it. http://productforums.google.com/forum/#!topic/webmasters/Fk2FxkP0-TM

I haven't been able to find a workaround as of yet.

Instead might it be better to not output anything if there is nothing to actually output?

Does the spec require an empty file if no values exist? I couldn't find an answer to this. Thanks.