diff --git a/README.md b/README.md
index 1784f48b..5963287e 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,10 @@ Version 1.0.5 (In progress)
 
 * Fixed issue in FrameData.getFrameIndexes where the input array was being ignored.
 * Added Math.numberArray - Returns an Array containing the numbers from min to max (inclusive), useful for animation frame construction.
+* Fixed a horrendously sneaky bug: If a new tween was created in the onComplete callback of a tween about to be deleted, it would get automatically spliced.
+* Added a pendingDelete property to Tween to stop tweens that were removed during a callback from causing update errors during the TweenManager loop.
+* Added Group.length property.
+
 
 
 Version 1.0.4 (September 18th 2013)
diff --git a/build/build.php b/build/build.php
index f7c2de4c..8379975d 100644
--- a/build/build.php
+++ b/build/build.php
@@ -2,7 +2,13 @@
 
 <textarea style="width: 800px; height: 800px">
 <?php
-	
+	//	Get the version number
+	//	VERSION: '1.0.5', 
+	$vf = file_get_contents('../src/Phaser.js');
+	$version = substr($vf, strpos($vf, 'VERSION: ') + 10, 5);
+
+	echo "Building version $version \n\n";
+
 	$js = file('../examples/js.php');
 	$output = "";
 
@@ -15,16 +21,21 @@
 		{
 			$line = str_replace('<script src="', '', $line);
 			$line = str_replace('"></script>', '', $line);
+			$filename = substr($line, strrpos($line, '/') + 1);
 
 			echo $line . "\n";
+			// echo $filename . "\n";
 
 			//	Read the file in
 			$source = file_get_contents($line);
 
-			if ($i == 4)
+			if ($filename == 'Intro.js')
 			{
 				//	Built at: {buildDate}
 				$source = str_replace('{buildDate}', date('r'), $source);
+
+				//	{version}
+				$source = str_replace('{version}', $version, $source);
 			}
 
 			$output .= $source . "\n";
diff --git a/build/phaser.js b/build/phaser.js
index e12b7b09..3963be1d 100644
--- a/build/phaser.js
+++ b/build/phaser.js
@@ -1,7 +1,7 @@
 /**
 * Phaser - http://www.phaser.io
 *
-* v1.0.1 - Built at: Wed, 18 Sep 2013 05:29:56 +0000
+* v1.0.5 - Built at: Thu, 19 Sep 2013 03:03:05 +0000
 *
 * @author Richard Davey http://www.photonstorm.com @photonstorm
 *
@@ -34,7 +34,7 @@ var PIXI = PIXI || {};
  */
 var Phaser = Phaser || { 
 
-	VERSION: '1.0.4', 
+	VERSION: '1.0.5', 
 	GAMES: [], 
 	AUTO: 0,
 	CANVAS: 1,
@@ -16769,6 +16769,26 @@ Phaser.Math = {
             }
         }
 
+    },
+
+    /**
+    * Returns an Array containing the numbers from min to max (inclusive)
+    *
+    * @param min The minimum value the array starts with
+    * @param max The maximum value the array contains
+    * @return The array of number values
+    */
+    numberArray: function (min, max) {
+
+        var result = [];
+
+        for (var i = min; i <= max; i++)
+        {
+            result.push(i);
+        }
+
+        return result;
+
     },
 
 	/**
@@ -19282,6 +19302,7 @@ Phaser.TweenManager = function (game) {
 
 	this.game = game;
 	this._tweens = [];
+	this._add = [];
 
 	this.game.onPause.add(this.pauseAll, this);
 	this.game.onResume.add(this.resumeAll, this);
@@ -19319,7 +19340,7 @@ Phaser.TweenManager.prototype = {
 	*/
 	add: function ( tween ) {
 
-		this._tweens.push( tween );
+		this._add.push( tween );
 
 	},
 
@@ -19346,7 +19367,7 @@ Phaser.TweenManager.prototype = {
 
 		if ( i !== -1 ) {
 
-			this._tweens.splice( i, 1 );
+			this._tweens[i].pendingDelete = true;
 
 		}
 
@@ -19359,9 +19380,10 @@ Phaser.TweenManager.prototype = {
 	*/
 	update: function () {
 
-		if ( this._tweens.length === 0 ) return false;
+		if ( this._tweens.length === 0 && this._add.length === 0 ) return false;
 
-		var i = 0, numTweens = this._tweens.length;
+		var i = 0;
+		var numTweens = this._tweens.length;
 
 		while ( i < numTweens ) {
 
@@ -19379,6 +19401,13 @@ Phaser.TweenManager.prototype = {
 
 		}
 
+		//	If there are any new tweens to be added, do so now - otherwise they can be spliced out of the array before ever running
+		if (this._add.length > 0)
+		{
+			this._tweens = this._tweens.concat(this._add);
+			this._add.length = 0;
+		}
+
 		return true;
 
 	},
@@ -19444,6 +19473,8 @@ Phaser.Tween = function (object, game) {
 
     this._pausedTime = 0;
 
+    this.pendingDelete = false;
+
 	// Set all starting values present on the target object
 	for ( var field in object ) {
 		this._valuesStart[ field ] = parseFloat(object[field], 10);
@@ -19598,21 +19629,21 @@ Phaser.Tween.prototype = {
 
 	},
 
-	onStart: function ( callback ) {
+	onStartCallback: function ( callback ) {
 
 		this._onStartCallback = callback;
 		return this;
 
 	},
 
-	onUpdate: function ( callback ) {
+	onUpdateCallback: function ( callback ) {
 
 		this._onUpdateCallback = callback;
 		return this;
 
 	},
 
-	onComplete: function ( callback ) {
+	onCompleteCallback: function ( callback ) {
 
 		this._onCompleteCallback = callback;
 		return this;
@@ -19630,6 +19661,11 @@ Phaser.Tween.prototype = {
 
 	update: function ( time ) {
 
+		if (this.pendingDelete)
+		{
+			return false;
+		}
+
         if (this._paused || time < this._startTime) {
 
             return true;
@@ -20819,8 +20855,8 @@ Phaser.Animation.prototype = {
 
         if (frameRate !== null)
         {
-            // this.delay = 1000 / frameRate;
-            this.delay = frameRate;
+            this.delay = 1000 / frameRate;
+            // this.delay = frameRate;
         }
 
         if (loop !== null)
@@ -21421,14 +21457,14 @@ Phaser.Animation.FrameData.prototype = {
     * @param {Array} [output] Optional array. If given the results will be appended to the end of this Array, otherwise a new array is created.
     * @return {Array} An array of all Frame indexes matching the given names or IDs.
     */
-    getFrameIndexes: function (input, useNumericIndex, output) {
+    getFrameIndexes: function (frames, useNumericIndex, output) {
 
         if (typeof useNumericIndex === "undefined") { useNumericIndex = true; }
         if (typeof output === "undefined") { output = []; }
 
         if (typeof frames === "undefined" || frames.length == 0)
         {
-            //  No input array, so we loop through all frames
+            //  No frames array, so we loop through all frames
             for (var i = 0, len = this._frames.length; i < len; i++)
             {
                 output.push(this._frames[i].index);
@@ -21437,16 +21473,16 @@ Phaser.Animation.FrameData.prototype = {
         else
         {
             //  Input array given, loop through that instead
-            for (var i = 0, len = input.length; i < len; i++)
+            for (var i = 0, len = frames.length; i < len; i++)
             {
-                //  Does the input array contain names or indexes?
+                //  Does the frames array contain names or indexes?
                 if (useNumericIndex)
                 {
-                    output.push(input[i].index);
+                    output.push(frames[i].index);
                 }
                 else
                 {
-                    output.push(this.getFrameByName(input[i]).index);
+                    output.push(this.getFrameByName(frames[i]).index);
                 }
             }
         }
@@ -21613,6 +21649,7 @@ Phaser.Animation.Parser = {
                 );
 
                 PIXI.TextureCache[uuid].realSize = frames[i].spriteSourceSize;
+                // PIXI.TextureCache[uuid].realSize = frames[i].sourceSize;
                 PIXI.TextureCache[uuid].trim.x = 0;
             }
         }
@@ -21682,6 +21719,7 @@ Phaser.Animation.Parser = {
                 );
 
                 PIXI.TextureCache[uuid].realSize = frames[key].spriteSourceSize;
+                // PIXI.TextureCache[uuid].realSize = frames[key].sourceSize;
                 PIXI.TextureCache[uuid].trim.x = 0;
             }
 
diff --git a/src/Intro.js b/src/Intro.js
index bbc5989f..08ea73e7 100644
--- a/src/Intro.js
+++ b/src/Intro.js
@@ -1,7 +1,7 @@
 /**
 * Phaser - http://www.phaser.io
 *
-* v1.0.1 - Built at: {buildDate}
+* v{version} - Built at: {buildDate}
 *
 * @author Richard Davey http://www.photonstorm.com @photonstorm
 *
diff --git a/src/animation/Parser.js b/src/animation/Parser.js
index 68a6e89d..a711c202 100644
--- a/src/animation/Parser.js
+++ b/src/animation/Parser.js
@@ -139,6 +139,7 @@ Phaser.Animation.Parser = {
                 );
 
                 PIXI.TextureCache[uuid].realSize = frames[i].spriteSourceSize;
+                // PIXI.TextureCache[uuid].realSize = frames[i].sourceSize;
                 PIXI.TextureCache[uuid].trim.x = 0;
             }
         }
@@ -208,6 +209,7 @@ Phaser.Animation.Parser = {
                 );
 
                 PIXI.TextureCache[uuid].realSize = frames[key].spriteSourceSize;
+                // PIXI.TextureCache[uuid].realSize = frames[key].sourceSize;
                 PIXI.TextureCache[uuid].trim.x = 0;
             }
 
diff --git a/src/core/Group.js b/src/core/Group.js
index 4bc478ce..f8b0ca35 100644
--- a/src/core/Group.js
+++ b/src/core/Group.js
@@ -832,6 +832,14 @@ Phaser.Group.prototype = {
 
 };
 
+Object.defineProperty(Phaser.Group.prototype, "length", {
+
+    get: function () {
+        return this._container.children.length;
+    }
+
+});
+
 Object.defineProperty(Phaser.Group.prototype, "x", {
 
     get: function () {
diff --git a/src/tween/Tween.js b/src/tween/Tween.js
index 7102ca8d..45b29c6e 100644
--- a/src/tween/Tween.js
+++ b/src/tween/Tween.js
@@ -36,6 +36,8 @@ Phaser.Tween = function (object, game) {
 
     this._pausedTime = 0;
 
+    this.pendingDelete = false;
+
 	// Set all starting values present on the target object
 	for ( var field in object ) {
 		this._valuesStart[ field ] = parseFloat(object[field], 10);
@@ -190,21 +192,21 @@ Phaser.Tween.prototype = {
 
 	},
 
-	onStart: function ( callback ) {
+	onStartCallback: function ( callback ) {
 
 		this._onStartCallback = callback;
 		return this;
 
 	},
 
-	onUpdate: function ( callback ) {
+	onUpdateCallback: function ( callback ) {
 
 		this._onUpdateCallback = callback;
 		return this;
 
 	},
 
-	onComplete: function ( callback ) {
+	onCompleteCallback: function ( callback ) {
 
 		this._onCompleteCallback = callback;
 		return this;
@@ -222,6 +224,11 @@ Phaser.Tween.prototype = {
 
 	update: function ( time ) {
 
+		if (this.pendingDelete)
+		{
+			return false;
+		}
+
         if (this._paused || time < this._startTime) {
 
             return true;
diff --git a/src/tween/TweenManager.js b/src/tween/TweenManager.js
index ddf5bfe8..c6ab3920 100644
--- a/src/tween/TweenManager.js
+++ b/src/tween/TweenManager.js
@@ -13,6 +13,7 @@ Phaser.TweenManager = function (game) {
 
 	this.game = game;
 	this._tweens = [];
+	this._add = [];
 
 	this.game.onPause.add(this.pauseAll, this);
 	this.game.onResume.add(this.resumeAll, this);
@@ -50,7 +51,7 @@ Phaser.TweenManager.prototype = {
 	*/
 	add: function ( tween ) {
 
-		this._tweens.push( tween );
+		this._add.push( tween );
 
 	},
 
@@ -77,7 +78,7 @@ Phaser.TweenManager.prototype = {
 
 		if ( i !== -1 ) {
 
-			this._tweens.splice( i, 1 );
+			this._tweens[i].pendingDelete = true;
 
 		}
 
@@ -90,9 +91,10 @@ Phaser.TweenManager.prototype = {
 	*/
 	update: function () {
 
-		if ( this._tweens.length === 0 ) return false;
+		if ( this._tweens.length === 0 && this._add.length === 0 ) return false;
 
-		var i = 0, numTweens = this._tweens.length;
+		var i = 0;
+		var numTweens = this._tweens.length;
 
 		while ( i < numTweens ) {
 
@@ -110,6 +112,13 @@ Phaser.TweenManager.prototype = {
 
 		}
 
+		//	If there are any new tweens to be added, do so now - otherwise they can be spliced out of the array before ever running
+		if (this._add.length > 0)
+		{
+			this._tweens = this._tweens.concat(this._add);
+			this._add.length = 0;
+		}
+
 		return true;
 
 	},