please help me as soon as possible
i am getting errors after upgrading K2 2.6.2 to K2 2.6.7.
when i try to edit category this prompt bellow alert

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

i have no idea why this errors occurs please help.
i am new to K2 and joomla

Which joomla version do you use?

i'm using Joomla! 2.5.9

I will mark this topic as solved as well, since you have already posted your solution to this one: getk2.org/community/New-to-K2-Ask-here-first/180363-Calendarsetup-Nothing-to-setup-no-fields-foun

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'));