diff --git a/vendor/backbone/backbone.js b/vendor/backbone/backbone.js
index 3457b0f4f..d8e31b352 100644
--- a/vendor/backbone/backbone.js
+++ b/vendor/backbone/backbone.js
@@ -1234,8 +1234,8 @@
     // memory leaks.
     dispose: function() {
       this.undelegateEvents();
-      if (this.model) this.model.off(null, null, this);
-      if (this.collection) this.collection.off(null, null, this);
+      if (this.model && this.model.off) this.model.off(null, null, this);
+      if (this.collection && this.collection.off) this.collection.off(null, null, this);
       return this;
     },
 
diff --git a/vendor/backbone/test/view.js b/vendor/backbone/test/view.js
index d2741a744..1de5c20e4 100644
--- a/vendor/backbone/test/view.js
+++ b/vendor/backbone/test/view.js
@@ -286,11 +286,11 @@ $(document).ready(function() {
   test("dispose", 0, function() {
     var View = Backbone.View.extend({
       events: {
-        click: function() { ok(false); }
+        click: function() { fail(); }
       },
       initialize: function() {
-        this.model.on('all x', function(){ ok(false); }, this);
-        this.collection.on('all x', function(){ ok(false); }, this);
+        this.model.on('all x', function(){ fail(); }, this);
+        this.collection.on('all x', function(){ fail(); }, this);
       }
     });
 
@@ -305,6 +305,11 @@ $(document).ready(function() {
     view.$el.click();
   });
 
+  test("dispose with non Backbone objects", 0, function() {
+    var view = new Backbone.View({model: {}, collection: {}});
+    view.dispose();
+  });
+
   test("view#remove calls dispose.", 1, function() {
     var view = new Backbone.View();
 
diff --git a/vendor/underscore/test/arrays.js b/vendor/underscore/test/arrays.js
index 1ab33d8f7..a757ced67 100644
--- a/vendor/underscore/test/arrays.js
+++ b/vendor/underscore/test/arrays.js
@@ -144,6 +144,7 @@ $(document).ready(function() {
     equal(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
     var result = (function(){ return _.indexOf(arguments, 2); })(1, 2, 3);
     equal(result, 1, 'works on an arguments object');
+    equal(_.indexOf(null, 2), -1, 'handles nulls properly');
 
     var numbers = [10, 20, 30, 40, 50], num = 35;
     var index = _.indexOf(numbers, num, true);
@@ -172,6 +173,7 @@ $(document).ready(function() {
     equal(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
     var result = (function(){ return _.lastIndexOf(arguments, 1); })(1, 0, 1, 0, 0, 1, 0, 0, 0);
     equal(result, 5, 'works on an arguments object');
+    equal(_.indexOf(null, 2), -1, 'handles nulls properly');
 
     numbers = [1, 2, 3, 1, 2, 3, 1, 2, 3];
     index = _.lastIndexOf(numbers, 2, 2);
diff --git a/vendor/underscore/test/collections.js b/vendor/underscore/test/collections.js
index 095ace1d3..efc5723d4 100644
--- a/vendor/underscore/test/collections.js
+++ b/vendor/underscore/test/collections.js
@@ -25,6 +25,10 @@ $(document).ready(function() {
     answer = null;
     _.each([1, 2, 3], function(num, index, arr){ if (_.include(arr, num)) answer = true; });
     ok(answer, 'can reference the original collection from inside the iterator');
+
+    answers = 0;
+    _.each(null, function(){ ++answers; });
+    equal(answers, 0, 'handles a null properly');
   });
 
   test('map', function() {
@@ -50,6 +54,9 @@ $(document).ready(function() {
 
     var ids = _.map(document.images, function(n){ return n.id; });
     ok(ids[0] == 'chart_image', 'can use collection methods on HTMLCollections');
+
+    var ifnull = _.map(null, function(){});
+    ok(_.isArray(ifnull) && ifnull.length === 0, 'handles a null properly');
   });
 
   test('reduce', function() {
@@ -69,6 +76,15 @@ $(document).ready(function() {
     var sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num; });
     equal(sum, 6, 'default initial value');
 
+    var ifnull;
+    try {
+      _.reduce(null, function(){});
+    } catch (ex) {
+      ifnull = ex;
+    }
+    ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
+
+    ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
     equal(_.reduce([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
     raises(function() { _.reduce([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
   });
@@ -83,9 +99,19 @@ $(document).ready(function() {
     var list = _.foldr(["foo", "bar", "baz"], function(memo, str){ return memo + str; });
     equal(list, 'bazbarfoo', 'default initial value');
 
+    var ifnull;
+    try {
+      _.reduceRight(null, function(){});
+    } catch (ex) {
+      ifnull = ex;
+    }
+    ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
+
     var sum = _.reduceRight({a: 1, b: 2, c: 3}, function(sum, num){ return sum + num; });
     equal(sum, 6, 'default initial value on object');
 
+    ok(_.reduceRight(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
+
     equal(_.reduceRight([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
     raises(function() { _.reduceRight([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
 
diff --git a/vendor/underscore/underscore-min.js b/vendor/underscore/underscore-min.js
index e617fe871..ad3a39ad8 100644
--- a/vendor/underscore/underscore-min.js
+++ b/vendor/underscore/underscore-min.js
@@ -1,5 +1,5 @@
-//     Underscore.js 1.4.1
+//     Underscore.js 1.4.2
 //     http://underscorejs.org
 //     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore may be freely distributed under the MIT license.
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diff --git a/vendor/underscore/underscore.js b/vendor/underscore/underscore.js
index 2ab97e902..1ebe2671b 100644
--- a/vendor/underscore/underscore.js
+++ b/vendor/underscore/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.4.1
+//     Underscore.js 1.4.2
 //     http://underscorejs.org
 //     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore may be freely distributed under the MIT license.
@@ -65,7 +65,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.4.1';
+  _.VERSION = '1.4.2';
 
   // Collection Functions
   // --------------------
@@ -74,6 +74,7 @@
   // Handles objects with the built-in `forEach`, arrays, and raw objects.
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
   var each = _.each = _.forEach = function(obj, iterator, context) {
+    if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
       obj.forEach(iterator, context);
     } else if (obj.length === +obj.length) {
@@ -93,6 +94,7 @@
   // Delegates to **ECMAScript 5**'s native `map` if available.
   _.map = _.collect = function(obj, iterator, context) {
     var results = [];
+    if (obj == null) return results;
     if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
     each(obj, function(value, index, list) {
       results[results.length] = iterator.call(context, value, index, list);
@@ -104,6 +106,7 @@
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
     var initial = arguments.length > 2;
+    if (obj == null) obj = [];
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
       return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
@@ -124,6 +127,7 @@
   // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
   _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
     var initial = arguments.length > 2;
+    if (obj == null) obj = [];
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
       return arguments.length > 2 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
@@ -163,6 +167,7 @@
   // Aliased as `select`.
   _.filter = _.select = function(obj, iterator, context) {
     var results = [];
+    if (obj == null) return results;
     if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     each(obj, function(value, index, list) {
       if (iterator.call(context, value, index, list)) results[results.length] = value;
@@ -173,6 +178,7 @@
   // Return all the elements for which a truth test fails.
   _.reject = function(obj, iterator, context) {
     var results = [];
+    if (obj == null) return results;
     each(obj, function(value, index, list) {
       if (!iterator.call(context, value, index, list)) results[results.length] = value;
     });
@@ -185,6 +191,7 @@
   _.every = _.all = function(obj, iterator, context) {
     iterator || (iterator = _.identity);
     var result = true;
+    if (obj == null) return result;
     if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
     each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) return breaker;
@@ -198,6 +205,7 @@
   var any = _.some = _.any = function(obj, iterator, context) {
     iterator || (iterator = _.identity);
     var result = false;
+    if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     each(obj, function(value, index, list) {
       if (result || (result = iterator.call(context, value, index, list))) return breaker;
@@ -209,6 +217,7 @@
   // Aliased as `include`.
   _.contains = _.include = function(obj, target) {
     var found = false;
+    if (obj == null) return found;
     if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     found = any(obj, function(value) {
       return value === target;
@@ -500,6 +509,7 @@
   // If the array is large and already in sort order, pass `true`
   // for **isSorted** to use binary search.
   _.indexOf = function(array, item, isSorted) {
+    if (array == null) return -1;
     var i = 0, l = array.length;
     if (isSorted) {
       if (typeof isSorted == 'number') {
@@ -516,6 +526,7 @@
 
   // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
   _.lastIndexOf = function(array, item, from) {
+    if (array == null) return -1;
     var hasIndex = from != null;
     if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
       return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);