Question Weird Error with Kunena Latest

I've just updated my kunena to the newest release, and i found that module Kunena latest also should work...
Everything ok - at last i will implement my kunena with main page of my site ... but no.
After instalning Kunena latest i'm having some errors....
My main page is ok but on some articles and menu ithems i'm having eror like that: So i had to uninstal kunena latest.
Can anyone help me with this issue?

Maby this will help:

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Joomla default template details : rt_refraction_j15 | author: RocketTheme, LLC | version: 1.5.2 | creationdate: March 25, 2010

Kunena default template details : Aphotic | author: snilloconator | version: 1.6.0 | creationdate: 2010-23-09

Kunena version detailled: Installed version: 1.6.2 | Build: 3894 | Version name: Team | Kunena detailled configuration:

Warning: Spoiler!

[th]Kunena config settings:[/th]

board_title	MotionFreaks Forum
board_offline	0
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offline_message	<h2>Oficjalne support forum serwisu MotionFreaks.pl</h2> <div>Zapraszamy wkrótce!</div>
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Third-party components: AlphaUserPoints: Disabled or not installed | CommunityBuilder: Disabled or not installed | Jomsocial: Disabled or not installed | UddeIm: Disabled or not installed

Third-party SEF components: sh404sef: Disabled or not installed | ARTIO JoomSEF: Disabled or not installed | AceSEF: Disabled or not installed

Plugins: System - Mootools12: Enabled | System - Mootools Upgrade: Disabled | JFirePHP: Disabled or not installed | Kunena Discuss: Enabled (Version : 2.0 beta) | Kunena Search: Disabled or not installed | My Kunena Forum Menu: Disabled or not installed | My Kunena Forum Posts: Disabled or not installed

Modules: Kunena Latest: Disabled or not installed | Kunena Stats: Disabled or not installed | Kunena Login: Disabled or not installed

Hello,

How it's possible that you have kunena discuss version 2.0 ?

The official kuenna discuss is in version 1.6.2.

Woah...!
I don't know how it is possible.
The only thing that i did was to update from kunena 1.6 to 1.6.2(i downloaded kunena 1.6.2 from: www.kunena.org/download ) two days ago, and that was it.
But long story short; everything is ok now. I've just uninstaled that 2.0 beta and instaled official stabile 1.6.2 and everything works perfect - thanx.
It works 100% perfect: motionfreaks.pl/