diff --git a/src/meta/title.js b/src/meta/title.js
index 652001af97..0019cdb686 100644
--- a/src/meta/title.js
+++ b/src/meta/title.js
@@ -1,6 +1,7 @@
 'use strict';
 
-var user = require('../user'),
+var winston = require('winston'),
+	user = require('../user'),
 	translator = require('../../public/src/translator');
 
 module.exports = function(Meta) {
@@ -14,7 +15,14 @@ module.exports = function(Meta) {
 	};
 
 	Meta.title.build = function (urlFragment, language, callback) {
-		Meta.title.parseFragment(decodeURIComponent(urlFragment), language, function(err, title) {
+		var uri = '';
+		try {
+			uri = decodeURIComponent(urlFragment);
+		} catch(e) {
+			winston.error('Invalid url fragment : ' + urlFragment, e.stack);
+			return callback(null, Meta.config.browserTitle || 'NodeBB');
+		}
+		Meta.title.parseFragment(uri, language, function(err, title) {
 			if (err) {
 				title = Meta.config.browserTitle || 'NodeBB';
 			} else {
diff --git a/src/posts.js b/src/posts.js
index 346965709d..6eb1e9eae9 100644
--- a/src/posts.js
+++ b/src/posts.js
@@ -298,7 +298,7 @@ var async = require('async'),
 				}
 
 				posts = posts.filter(function(post) {
-					return parseInt(results.topics[post.tid].deleted, 10) !== 1;
+					return results.topics[post.tid] && parseInt(results.topics[post.tid].deleted, 10) !== 1;
 				});
 
 				async.map(posts, function(post, next) {
diff --git a/src/topics.js b/src/topics.js
index d43cb0fb31..395ab476fb 100644
--- a/src/topics.js
+++ b/src/topics.js
@@ -174,9 +174,9 @@ var async = require('async'),
 		Topics.getTopicsData(tids, function(err, topics) {
 			function mapFilter(array, field) {
 				return array.map(function(topic) {
-					return topic[field];
+					return topic && topic[field];
 				}).filter(function(value, index, array) {
-					return array.indexOf(value) === index;
+					return value && array.indexOf(value) === index;
 				});
 			}
 
@@ -219,21 +219,23 @@ var async = require('async'),
 				});
 
 				for (var i=0; i<topics.length; ++i) {
-					topics[i].category = categories[topics[i].cid];
-					topics[i].category.disabled = parseInt(topics[i].category.disabled, 10) === 1;
-					topics[i].user = users[topics[i].uid];
-					topics[i].teaser = results.teasers[i];
-					topics[i].tags = results.tags[i];
-
-					topics[i].pinned = parseInt(topics[i].pinned, 10) === 1;
-					topics[i].locked = parseInt(topics[i].locked, 10) === 1;
-					topics[i].deleted = parseInt(topics[i].deleted, 10) === 1;
-					topics[i].unread = !(results.hasRead[i] && parseInt(uid, 10) !== 0);
-					topics[i].unreplied = parseInt(topics[i].postcount, 10) <= 1;
+					if (topics[i]) {
+						topics[i].category = categories[topics[i].cid];
+						topics[i].category.disabled = parseInt(topics[i].category.disabled, 10) === 1;
+						topics[i].user = users[topics[i].uid];
+						topics[i].teaser = results.teasers[i];
+						topics[i].tags = results.tags[i];
+
+						topics[i].pinned = parseInt(topics[i].pinned, 10) === 1;
+						topics[i].locked = parseInt(topics[i].locked, 10) === 1;
+						topics[i].deleted = parseInt(topics[i].deleted, 10) === 1;
+						topics[i].unread = !(results.hasRead[i] && parseInt(uid, 10) !== 0);
+						topics[i].unreplied = parseInt(topics[i].postcount, 10) <= 1;
+					}
 				}
 
 				topics = topics.filter(function(topic) {
-					return !topic.category.disabled &&
+					return topic &&	!topic.category.disabled &&
 						(!topic.deleted || (topic.deleted && isAdminOrMod[topic.cid]) ||
 						parseInt(topic.uid, 10) === parseInt(uid, 10));
 				});