Hi Everyone!
I have Joomla! 2.5.8 and K2 v2.6.7. After upgrading to the current version, I can't create/edit any k2 item or category. I get a popup with the message:

Calendar.setup:
Nothing to setup (no fields found). Please check your code

and the page body contains a message in red background saying: XML file did not load

I have tried de-activating all k2 related plugins and k2 itself, + re-installing it, but still no luck.

Can anyone help?

I am getting the same error and never got it before and I have using k2 in at least 3 projects.

Did you solve it ? if yes, please how ?

If not what plugins are you using ?

Thanks and best regards.

Please try this fix:

Edit the file: libraries/joomla/html/html.php

Go to the line ~879 and find this line:
And replace it with this line:
Save the file and test.

still i am getting same error please help.
i have issue in after upgrading to k2 2.6.7

Have you tried @Mohamed Abdelaziz solution?

If it doesn't work try to install the K2 SVN 2.6.8 version located here:
getk2.org/assets/get/

and check again.

yes i have tried @Mohamed Abdelaziz solution but thats not work for me.
i will try svn packaged as soon as possible.
thanks for reply.

i have also tried SVN package provide by you but still getting errors.

hi everyone i m so happy because finally i found exact problem.
i have installed php 5.3.6 and there is no need to pass variable with & sign.
i m getting errors in from
administrator/components/com_k2/views/item/view.html.php file.

in this file line No. 429 to 451 use for plugin and passing $item with & sign so after removing & its proper works.
$K2PluginsItemContent = $dispatcher->trigger('onRenderAdminForm', array(&$item, 'item', 'content'));
replace with
$K2PluginsItemContent = $dispatcher->trigger('onRenderAdminForm', array($item, 'item', 'content'));

I'm glad you have sorted it out and thank you for sharing.

Hi

Ajay Gadhavana solution work but there is a problem.
If you do that you disable your k2 pluggins.