Since you aren't responding on my other thread:

Hi,
Since you aren't responding on my other thread: https://premium.wpmudev.org/forums/topic/not-working-after-update#post-485648

I decided to create another one to hopefully get your attention.

The problem is that our feed does not work on some sites and the link doesn't even work in firefox at all.

Tried the feed on Feedvalidator: http://feedvalidator.org/check.cgi?url=http%3A%2F%2Fwww.kostdemokrati.se%2Ffeed%2Fglobalpostsfeed%3Fposttype%3Dpost

It returns an error. Really needs to have this fixed as soon as possible.

We have almost 50k visits every week so we really need to have a working feed.

/Robert