ошибка при отображении шаблона

joomla 1.7.1 artisteer 3.устанавливаю шаблон-появляется ошибка

Fatal error: Cannot access protected property ContentViewArticle::$user in Yhome\localhost\www\joomla\templates\untitled\functions.php on line 40

вот сам файл
<?php
defined('_JEXEC') or die;

if (!defined('_ARTX_FUNCTIONS')) {

define('_ARTX_FUNCTIONS', 1);

$GLOBALS['artx_settings'] = array(
'block' => array('has_header' => true),
'menu' => array('show_submenus' => false),
'vmenu' => array('show_submenus' => false, 'simple' => false)
);

class ArtxContentArticleView15
{
private $_document;
private $_data;

public $version;
public $params;
public $canEdit;
public $pageHeadingVisible;
public $pageHeading;
public $titleVisible;
public $titleLink;
public $title;
public $print;
public $pdf;
public $hits;
public $parentCategoryVisible;
public $categoryVisible;

function __construct(&$document, &$item, &$params) {
$this->_document = $document;
$this->_data = array();

$this->item = & $item;
$this->params = & $params;

$this->canEdit = $this->_document->user->authorize('com_content', 'edit', 'content', 'all') || $this->_document->user->authorize('com_content', 'edit', 'content', 'own');
$this->pageHeadingVisible = $this->params->get('show_page_title', 1) && $this->params->get('page_title') != $this->item->title;
$this->pageHeading = $this->params->get('page_title');
$this->titleVisible = $this->params->get('show_title');
$this->titleLink = ($this->params->get('link_titles') && !empty($this->item->readmore_link)) ? $this->item->readmore_link : '';
$this->title = $this->item->title;
$this->print = $this->print;
$this->pdf = true;
$this->hits = false;
$this->parentCategoryVisible = $this->params->get('show_section') && $this->item->sectionid && isset($this->item->section);
$this->categoryVisible = $this->params->get('show_category') && $this->item->catid;
}

function renderPageContainerBegin() {
return '';
}

function renderPageHeading() {
if ($this->pageHeadingVisible)
return artxPost(array('header-text' => $this->_document->escape($this->pageHeading)));
return '';
}

function getArticleViewParameters() {
return array('metadata-header-icons' => array(), 'metadata-footer-icons' => array());
}

function renderCreateDateInfo() {
return JHTML::_('date', $this->item->created, JText::_('DATE_FORMAT_LC2'));
}

function renderModifyDateInfo() {
return JText::sprintf('LAST_UPDATED2', JHTML::_('date', $this->item->modified, JText::_('DATE_FORMAT_LC2')));
}

function renderPublishDateInfo() {
return '';
}

function renderAuthorInfo() {
return JText::sprintf('Written by', (!empty($this->item->created_by_alias)
? $this->_document->escape($this->item->created_by_alias)
: $this->_document->escape($this->item->author)));
}

function renderPrintPopupIcon() {
return JHtml::_('icon.print_popup', $this->item, $this->params, $this->_document->access);
}

function renderPrintScreenIcon() {
return JHtml::_('icon.print_screen', $this->item, $this->params, $this->_document->access);
}

function renderEmailIcon() {
return JHtml::_('icon.email', $this->item, $this->params, $this->_document->access);
}

function renderEditIcon() {
return JHtml::_('icon.edit', $this->item, $this->params, $this->_document->access);
}

function renderPdfIcon() {
return JHTML::_('icon.pdf', $this->item, $this->params, $this->_document->access);
}

function renderHitsInfo() {
return '';
}

function renderCategories() {
$result = JText::_('Category') . ': ';
if ($this->parentCategoryVisible) {
$result .= '<span class="art-post-metadata-category-parent">';
$title = $this->_document->escape($this->item->section);
if ($this->params->get('link_section'))
$result .= '<a href="' . JRoute::_(ContentHelperRoute::getSectionRoute($this->item->sectionid)).'">' . $title . '</a>';
else
$result .= $title;
$result .= '</span>';
}
if ($this->parentCategoryVisible && $this->categoryVisible)
$result .= ' / ';
if ($this->categoryVisible) {
$result .= '<span class="art-post-metadata-category-name">';
$title = $this->_document->escape($this->item->category);
if ($this->params->get('link_category'))
$result .= '<a href="' . JRoute::_(ContentHelperRoute::getCategoryRoute($this->item->catslug, $this->item->sectionid)) . '">' . $title . '</a>';
else
$result .= $title;
$result .= '</span>';
}
return $result;
}

function renderArticle($article) {
return artxPost($article);
}

function renderPageContainerEnd() {
return '';
}

}

class ArtxContentArticleView16
{
private $_document;

public $version;
public $params;
public $canEdit;
public $pageHeadingVisible;
public $pageHeading;
public $titleVisible;
public $titleLink;
public $title;
public $print;
public $pdf;
public $hits;
public $parentCategoryVisible;
public $categoryVisible;

function __construct(&$document, &$item, &$params) {
$this->_document = $document;

$this->item = & $item;
$this->params = & $params;

$this->canEdit = $document->user->authorise('core.edit', 'com_content.frontpage.' . $this->item->id);
$this->pageHeadingVisible = $this->params->get('show_page_heading', 1);
$this->pageHeading = $this->params->get('page_heading');
$this->titleVisible = $this->params->get('show_title') || $this->params->get('access-edit');
$this->titleLink = $this->params->get('link_titles') && !empty($this->item->readmore_link) ? $this->item->readmore_link : '';
$this->title = $this->item->title;
$this->print = $this->print;
$this->hits = true;
$this->pdf = false;
$this->parentCategoryVisible = $this->params->get('show_parent_category') && $this->item->parent_slug != '1:root';
$this->categoryVisible = $this->params->get('show_category');
}
................



что делать???