Hikashop doesn't work after server migration

class hikashopWysiwyg extends hikashopTextarea {
	function display($field, $value, $map, $inside, $options = '', $test = false, $allFields = null, $allValues = null) {
		$editorHelper = hikashop_get('helper.editor');
		$editorHelper->name = $map;
		$editorHelper->content = $value;
		$editorHelper->id = $this->prefix.@$field->field_namekey.$this->suffix;
		$editorHelper->width = '100%';
		$editorHelper->cols = empty($field->field_options['cols']) ? 50 : intval($field->field_options['cols']);
		$editorHelper->rows = empty($field->field_options['rows']) ? 10 : intval($field->field_options['rows']);

		$ret = $editorHelper->display().
			'<div style="clear:both"></div>'.
			'<script type="text/javascript"><!--'."\r\n".
			'if(window.Oby) window.Oby.registerAjax("syncWysiwygEditors", function(){ try{ '.$editorHelper->jsCode().' }catch(err){} });'."\r\n".
			'--></script>';

		return $ret;
/*
		$js = '';
		$html = '';
		if($inside && strlen($value) < 1){
			$value = addslashes($this->trans($field->field_realname));
			$this->excludeValue[$field->field_namekey] = $value;
			$js = 'onfocus="if(this.value == \''.$value.'\') this.value = \'\';" onblur="if(this.value==\'\') this.value=\''.$value.'\';"';
		}
		if(!empty($field->field_options['maxlength'])){
			static $done = false;
			if(!$done){
				$jsFunc='
				function hikashopTextCounter(textarea, counterID, maxLen) {
					cnt = document.getElementById(counterID);
					if (textarea.value.length > maxLen){
						textarea.value = textarea.value.substring(0,maxLen);
					}
					cnt.innerHTML = maxLen - textarea.value.length;
				}';
				if(!HIKASHOP_PHP5) {
					$doc =& JFactory::getDocument();
				} else {
					$doc = JFactory::getDocument();
				}
				$doc->addScriptDeclaration( "<!--\n".$jsFunc."\n//-->\n" );
				$html.= '<span class="hikashop_remaining_characters">'.JText::sprintf('X_CHARACTERS_REMAINING',$this->prefix.@$field->field_namekey.$this->suffix.'_count',(int)$field->field_options['maxlength']).'</span>';
			}
			$js .= ' onKeyUp="hikashopTextCounter(this,\''.$this->prefix.@$field->field_namekey.$this->suffix.'_count'.'\','.(int)$field->field_options['maxlength'].');" onBlur="hikashopTextCounter(this,\''.$this->prefix.@$field->field_namekey.$this->suffix.'_count'.'\','.(int)$field->field_options['maxlength'].');" ';
		}

		$cols = empty($field->field_options['cols']) ? '' : 'cols="'.intval($field->field_options['cols']).'"';
		$rows = empty($field->field_options['rows']) ? '' : 'rows="'.intval($field->field_options['rows']).'"';
		$options .= empty($field->field_options['readonly']) ? '' : ' readonly="readonly"';
		return '<textarea class="inputbox" id="'.$this->prefix.@$field->field_namekey.$this->suffix.'" name="'.$map.'" '.$cols.' '.$rows.' '.$js.' '.$options.'>'.$value.'</textarea>'.$html;
*/
	}