I am using Joomla 2.5 Youtrader template.

My problem is:

-Cannot create new group in K2 Extra Field Group
-Cannot edit anything.
-Cannot delete
-Cannot rename.

Can anyone help me?

Thanks in advance!

Hi,

Can you see any error messages?
Which version of K2 you installed?

Most probably its a javascript error, can you use firebug to check for javascript errors?
Is it a local or remote server?

Yes, I am using localhost.
There are no error messages.
When I am trying to change, to edit, to delete, it is not possible.
Version is 2.5.7.
It comes with youtrader template.

If your server is not connected to the Internet, and you setup K2 to load the remote copy of jQuery, this can cause these problems.

If so, edit K2 parameters to set it to load the local copy of jQuery.

Thanks too much! :)

It has worked!

I have loaded local copy of JQuery.