[@johnhiler Member 15 years, 7 months ago]

I’m not really familiar with deep integration, so I don’t have any insight beyond just looking for similar errors reported on the forums.

That error has only come up twice that I can see:

http://www.google.com/search?q=Premature+end+of+script+headers+site%3ABbpress.org

The first user didn’t report the fix, although a few other users in that same thread reported alternate approaches that resolved the issue for them.

The second user mentioned a conflict with a plugin.