XF 1.4 Saving any option in AdminCP redirects to forum index

[Arno Nühm]

Whenever I hit the save button in any options page in the AdminCP I get redirected to forum index instead of being redirected to the same options page.

I have absolutely no idea what is wrong.

- I re-uploaded all XF files again.
- I checked file health.
- I checked .htaccess.
- I checked AddOns.

This problem only happens in the AdminCP. Everything else seems to be okay.

 

[Arno Nühm]

LOL, now after weeks of searching I found the "error".

It was a "no referer"-AddOn in Firefox Browser. I had to disable it for this domain. OMG...