Im using a apache web server and php 5-3-28
Still same problem.

Hi there,

I got the same problem. Instal K2 again when using your link but still i got the message :
Method Not Implemented

POST to /administrator/index.php not supported.
Apache/2.2.0 (Fedora) Server at www.schrijverspunt.nl Port 80

What can i do?

Which version of Joomla! and K2 are you using?
The "Method Not Implemented" indicates a server related issue.

Which other extensions are you using?

Instellingen Waarde

PHP gebouwd op Linux web301.your-webhost.nl 2.6.32-531.29.2.lve1.3.11.1.el6.x86_64 #1 SMP Thu Dec 18 06:49:17 EST 2014 x86_64
Database versie 5.1.73-cll-lve
Database collatie latin1_swedish_ci
PHP versie 5.4.36
Webserver Apache/2.2.0 (Fedora)
WebServer naar PHP interface cgi-fcgi
Joomla! versie Joomla! 3.4.0 Stable [ Ember ] 24-February-2015 23:00 GMT
Joomla! Platform versie Joomla Platform 13.1.0 Stable [ Curiosity ] 24-Apr-2013 00:00 GMT
Gebruikersagent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0

K2=2.6.9.

I use several extensions like Community Builder, JCE, etc.

Can you edit the parameters of other extensions (eg articles) ?

yep that's no problem

Was it working under 3.3.6?
If yes try disabling all other K2 related extensions.

It didn't work under 3.3.6. too...

I believe there are no K2 related extensions.

And still the same problem.

So what to do?

K2 uses a simple xml file for its parameters. We do not use any custom functions. If Joomla! cannot parse this .xml file and it fails to implement any changes, then this indicates a server-side issue.

I think the issue lies with mod_security but I am sure that your hosting provider will be able to pinpoint the exact issue.
Feel free to c/p our discussion.

Thx,

For the good support. It was a server issue and the problem was solved.