jdstudios

FIXED!

I just upgraded to Thesis 1.8.5, put the fix in place mentioned by leanderbraunschweig (above) and it NOW WORKS. The upgrade from 1.6 to 1.8.5 was seamless, I didn’t lose any of my theme customization (just make sure you copy your /custom/ folder inside the theme)

It was definitely an issue with earlier versions of Thesis and WP 4.0. (we were running Thesis 1.6 and running into the 500 Server Error problems after upgrading to WP 4.0)

Thank you everyone, especially leanderbraunschweig. This is why I love the wordpress community: post a problem, get answers, problem solved the next day.

I’m having the same problem. Just upgraded to 4.0, and the majority of my blog posts on the front end are giving Server 500 errors. Everything in the back end is working just fine.

WordPress 4.0
theme: Thesis 1.6
a few plugins, all are current
hosting on hostgator

I’m going to contact hostgator and see if it’s anything on their end. ditesco, have you had any luck fixing your site?

Having the exact same issue.

Did you figure out the solution for this?

Maybe it’s a conflicting plugin? (another plugin might be sending something to the browser or already setting the ‘Content-Type’ header)

I was thinking maybe the “All-in-one SEO pack” plugin might be the culprit, since that sends a bunch of seo related header information. But disabling the plugin didn’t help.

Still looking for help…

I’ve isolated it to possibly an environment issue, because I copied the same theme & plugins to another wordpress environment (also 3.0.1) on a different hosting account (also on GoDaddy), and it worked fine.

Tried de-activating all plugins on the site where voucherpress doesn’t work, that didn’t help. Compared php.ini and .htaccess between both accounts, no difference there either.

Where else should I be looking?
Anyone out there that can help?
Anyone? Bueller?

update on my post above. I looked at the apache error log, and here’s what it spit out:

aborted: error parsing headers: duplicate header ‘Content-Type’

hopefully that will help.