Alex F

Sorry for the long silence. Thank you for looking into this.

I just tried 1.4.2

Unfortunately same result. Adding German as first language works fine, adding English_US as second language leads me to a Bad Gateway.

Yes, the previous combination worked to a certain point.

I am using WP Engine for hosting. They provided my with WP 3.8 (so not: 3.8.1 as in the case above), and I used the previous versions of the mentioned plug-ins (for Polylang, I used the version right before 1.4).

Everything worked fine (although the Day-Of-Week in the date of posts was only displayed in English, never in German).

I added a post with two diagrams, and added translations for each of the diagrams.

After that I cannot exactly recall the sequence, but what happened was:

I upgraded WP, and some time later all plugins to the most current version (WP 3.8.1., Polylang 1.4 etc).

I noticed that for one of the original diagrams (i.e. default language), the image itself was missing, although all the metadata seemed ok.

So I uploaded the diagram again, and tried to trash the broken medium.

If I remember correctly, this is when I got the first Bad Gateway.

However I am not sure if the first Bad Gateway happened immediately after upgrading the plugins (Polylang to 1.4), or after trying the fix the broken image.

I restored a backup and tried to work around this, without success. Now every change to the posts that had the diagram embedded caused a Bad Gateway, and there was no clean way of fixing it.

I worked through a couple of the available backups, all ultimately led to the same issue.

Thanks for the suggestion. I tried it. Unfortunately I got the same result.

I tried in staging environment:

WP 3.8.1.
Theme: twentyfourteen
Only active plugin: Polylang 1.4 (other plugins still installed but deactivated)

Adding German, English – Bad Gateway

…

WP 3.8.1.
Theme: twentyfourteen
Only active plugin: Polylang 1.4 (other plugins still installed but deactivated)

Adding English-US, German (different sequence) – Bad Gateway

Thanks for the quick response.

I did the following:

Added in wp-config.php

define('WP_DEBUG', true);
define('SCRIPT_DEBUG', true);
define('WP_DEBUG_LOG', true);
ini_set('display_errors','Off');

(my version did not have define('WP_DEBUG', false); )

Installed and activated Polylang, added German, English – Bad Gateway

There was no debug.log or wp-content/debug.log

Some background, maybe any of this helps you spot the root cause of this:

I am using WP Engine for hosting.

They provided my with WP 3.8 (so not: 3.8.1 as in the case above), and I used the previous versions of the mentioned plug-ins.

Everything worked fine (although there the Day-Of-Week in the date of posts was only displayed in English, never in German).

I added a post with two diagrams, and added translations for each of the diagrams.

After that I cannot exactly recall the sequence, but what happened was:

I upgraded WP and all plugins to the most current version (WP 3.8.1., Polylang 1.4 etc).

I noticed that for one of the original diagrams (i.e. default language), the image itself was missing, although all the metadata seemed ok.

So I uploaded the diagram again, and tried to trash the broken medium.

If I remember correctly, this is when I got the first Bad Gateway. However I am not sure if the first Bad Gateway happened immediately after upgrading the plugins, or after trying the fix the broken image.

I restored a backup and tried to work around this, without success. Now every change to the posts that had the diagram embedded caused a Bad Gateway, and there was no clean way of fixing it.

I worked through a couple of the available backups, all ultimately led to the same issue.

So I asked WP Engine to provide me with a fresh install, so I could start from scratch.

They did it, and what I got looked like a fresh install to me. All my content gone, instead I got the “Hello” content from WP etc.

However, this time I got WP 3.8.1., only Polylang 1.4 was available for install etc. The experience with it was what I called “Bad Gateway with Polylang 1.4 on fresh install” above.

Happy to try a “a new install from scratch”, but not sure how to get anything different from the last time I asked for it.

Any suggestions?

Ok, sure.

All plugins deactivated works just fine.

Activating only Polylang gets me a Bad Gateway.

Activating all other three, but not Polylang:

Google Analyticator v 6.4.7.3
IM8 Exclude Pages v 2.6.1
WordPress SEO v 1.4.24

works just fine.

Restoring a backup of the situation before I installed any of the plugins – ok

Re-installing all four plugins (works fine except Google Analyticator requiring a rmdir of its directory structure – did it), not activating any of them – ok

Activating Polylang – ok

Using Setting – languages – ok

Adding German – ok

Adding English – Bad Gateway

Restoring a backup of the situation before I installed any of the plugins – ok

Installing only Polylang – ok

Activating Polylang – ok

Using Setting – languages – ok

Adding German – ok

Adding English – US – Bad Gateway