cb 1.4 and joomla 1.6

Hi
kunena doesn't shown corectly in my j1.6 site! for discover the problem I install a fresh joomla without any extension and next install kunena. but problem still....
there is a link to my problem.

pooyatek.com/kunena/index.php/en/sample-sites-2

even in admin panel i have this problem

The sad fact is that if you have joomla 1.6.3 and Community Builder which requires Kunena, and you downloaded Kunena 1.6.3, IT WON"T WORK!

Apparently, The Joomla team changed the Joomla code in version 1.6.3 so that Kunena 1.6.+ versions will not function. From what I gather, Kunena and Community Builder did function under Joomla 1.6.1 and 1.6.2 to some extent, but not 100% completely.

You won't find this out unless you go to the Kunena forums and see it posted in threads there.

kunena 1.6.4 is public now. perhaps that changes something.

Thanks for your answers