Mi viene rilevato questo errore in questa funzione del codice function_display della phpbb3

codice:
		$template->assign_block_vars('forumrow', array( 			'S_IS_CAT'			=> false, 			'S_NO_CAT'			=> $catless && !$last_catless, 			'S_IS_LINK'			=> ($row['forum_type'] == FORUM_LINK) ? true : false, 			'S_UNREAD_FORUM'	=> $forum_unread, 			'S_AUTH_READ'		=> $auth->acl_get('f_read', $row['forum_id']), 			'S_LOCKED_FORUM'	=> ($row['forum_status'] == ITEM_LOCKED) ? true : false, 			'S_LIST_SUBFORUMS'	=> ($row['display_subforum_list']) ? true : false, 			'S_SUBFORUMS'		=> (sizeof($subforums_list)) ? true : false, 			'S_FEED_ENABLED'	=> ($config['feed_forum'] && !phpbb_optionget(FORUM_OPTION_FEED_EXCLUDE, $row['forum_options']) && $row['forum_type'] == FORUM_POST) ? true : false,  			'FORUM_ID'				=> $row['forum_id'], 			'FORUM_NAME'			=> $row['forum_name'], 			'FORUM_DESC'			=> generate_text_for_display($row['forum_desc'], $row['forum_desc_uid'], $row['forum_desc_bitfield'], $row['forum_desc_options']), 			'TOPICS'				=> $row['forum_topics'], 			$l_post_click_count		=> $post_click_count, 			'FORUM_FOLDER_IMG'		=> $user->img($folder_image, $folder_alt), 			'FORUM_FOLDER_IMG_SRC'	=> $user->img($folder_image, $folder_alt, false, '', 'src'), 			'FORUM_FOLDER_IMG_ALT'	=> isset($user->lang[$folder_alt]) ? $user->lang[$folder_alt] : '', 			'FORUM_IMAGE'			=> ($row['forum_image']) ? '[img]' . $phpbb_root_path . $row['forum_image'] . '[/img]lang[$folder_alt] . '" />' : '', 			'FORUM_IMAGE_SRC'		=> ($row['forum_image']) ? $phpbb_root_path . $row['forum_image'] : '', 			'LAST_POST_SUBJECT'		=> censor_text($last_post_subject), 			'LAST_POST_TIME'		=> $last_post_time, 			'LAST_POSTER'			=> get_username_string('username', $row['forum_last_poster_id'], $row['forum_last_poster_name'], $row['forum_last_poster_colour']), 			'LAST_POSTER_COLOUR'	=> get_username_string('colour', $row['forum_last_poster_id'], $row['forum_last_poster_name'], $row['forum_last_poster_colour']), 			'LAST_POSTER_FULL'		=> get_username_string('full', $row['forum_last_poster_id'], $row['forum_last_poster_name'], $row['forum_last_poster_colour']), 			'MODERATORS'			=> $moderators_list, 			'SUBFORUMS'				=> $s_subforums_list,  			'L_SUBFORUM_STR'		=> $l_subforums, 			'L_MODERATOR_STR'		=> $l_moderator,  			'U_UNAPPROVED_TOPICS'	=> ($row['forum_id_unapproved_topics']) ? append_sid("{$phpbb_root_path}mcp.$phpEx", 'i=queue&mode=unapproved_topics&f=' . $row['forum_id_unapproved_topics']) : '', 			'U_VIEWFORUM'		=> $u_viewforum, 			'U_LAST_POSTER'		=> get_username_string('profile', $row['forum_last_poster_id'], $row['forum_last_poster_name'], $row['forum_last_poster_colour']), 			'U_LAST_POST'		=> $last_post_url) 			// Topic Title in Last Posts - Micogian - Inizio 			'LAST_POST_SUBJECT_SHORT'   => $last_post_subject_short[0], 			'U_LAST_TOPIC'         	=> $last_topic_url, 			// Topic Title in Last Posts - Micogian - Fine 		);
Sto cercando di installare una Mod, ma però anche facendo tutto alla lettera mi appare quell'errore.
L'errore è sulla linea:
codice:
			'LAST_POST_SUBJECT_SHORT'   => $last_post_subject_short[0],
Qualcuno potrebbe aiutarmi? eppure ho seguito le istruzioni alla lettera, mah...