diff --git a/build/three.js b/build/three.js
index e5ba3121bd5994d3aeb899da02f27e5b93cebb7d..23a1a71c5b4a9043827b177235ef5357396a584f 100644
--- a/build/three.js
+++ b/build/three.js
@@ -19793,7 +19793,7 @@ THREE.CubeTextureLoader.prototype = {
 
 	load: function ( urls, onLoad, onProgress, onError ) {
 
-		var texture = new THREE.CubeTexture( [] );
+		var texture = new THREE.CubeTexture();
 
 		var loader = new THREE.ImageLoader( this.manager );
 		loader.setCrossOrigin( this.crossOrigin );
@@ -21901,11 +21901,11 @@ THREE.CanvasTexture.prototype.constructor = THREE.CanvasTexture;
 
 THREE.CubeTexture = function ( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {
 
+	images = images !== undefined ? images : [];
 	mapping = mapping !== undefined ? mapping : THREE.CubeReflectionMapping;
 
 	THREE.Texture.call( this, images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
 
-	this.images = images;
 	this.flipY = false;
 
 };
@@ -21913,15 +21913,21 @@ THREE.CubeTexture = function ( images, mapping, wrapS, wrapT, magFilter, minFilt
 THREE.CubeTexture.prototype = Object.create( THREE.Texture.prototype );
 THREE.CubeTexture.prototype.constructor = THREE.CubeTexture;
 
-THREE.CubeTexture.prototype.copy = function ( source ) {
+Object.defineProperty( THREE.CubeTexture.prototype, 'images', {
 
-	THREE.Texture.prototype.copy.call( this, source );
+	get: function () {
 
-	this.images = source.images;
+		return this.image;
 
-	return this;
+	},
 
-};
+	set: function ( value ) {
+
+		this.image = value;
+
+	}
+
+} );
 
 // File:src/textures/CompressedTexture.js
 
diff --git a/build/three.min.js b/build/three.min.js
index 6ae743d935228f0ceaba87f5f1ad3dcf63aa347f..5d261e203964617919dbac0f74e403b6e23e3dc9 100644
--- a/build/three.min.js
+++ b/build/three.min.js
@@ -418,7 +418,7 @@ case "SpotLight":g=new THREE.SpotLight(b.color,b.intensity,b.distance,b.angle,b.
 break;case "Sprite":g=new THREE.Sprite(f(b.material));break;case "Group":g=new THREE.Group;break;default:g=new THREE.Object3D}g.uuid=b.uuid;void 0!==b.name&&(g.name=b.name);void 0!==b.matrix?(a.fromArray(b.matrix),a.decompose(g.position,g.quaternion,g.scale)):(void 0!==b.position&&g.position.fromArray(b.position),void 0!==b.rotation&&g.rotation.fromArray(b.rotation),void 0!==b.scale&&g.scale.fromArray(b.scale));void 0!==b.castShadow&&(g.castShadow=b.castShadow);void 0!==b.receiveShadow&&(g.receiveShadow=
 b.receiveShadow);void 0!==b.visible&&(g.visible=b.visible);void 0!==b.userData&&(g.userData=b.userData);if(void 0!==b.children)for(var k in b.children)g.add(this.parseObject(b.children[k],c,d));if("LOD"===b.type)for(b=b.levels,h=0;h<b.length;h++){var l=b[h];k=g.getObjectByProperty("uuid",l.object);void 0!==k&&g.addLevel(k,l.distance)}return g}}()};THREE.TextureLoader=function(a){this.manager=void 0!==a?a:THREE.DefaultLoadingManager};
 THREE.TextureLoader.prototype={constructor:THREE.TextureLoader,load:function(a,b,c,d){var e=new THREE.Texture,f=new THREE.ImageLoader(this.manager);f.setCrossOrigin(this.crossOrigin);f.setPath(this.path);f.load(a,function(a){e.image=a;e.needsUpdate=!0;void 0!==b&&b(e)},c,d);return e},setCrossOrigin:function(a){this.crossOrigin=a},setPath:function(a){this.path=a}};THREE.CubeTextureLoader=function(a){this.manager=void 0!==a?a:THREE.DefaultLoadingManager};
-THREE.CubeTextureLoader.prototype={constructor:THREE.CubeTextureLoader,load:function(a,b,c,d){function e(c){g.load(a[c],function(a){f.images[c]=a;h++;6===h&&(f.needsUpdate=!0,b&&b(f))},void 0,d)}var f=new THREE.CubeTexture([]),g=new THREE.ImageLoader(this.manager);g.setCrossOrigin(this.crossOrigin);g.setPath(this.path);var h=0;for(c=0;c<a.length;++c)e(c);return f},setCrossOrigin:function(a){this.crossOrigin=a},setPath:function(a){this.path=a}};
+THREE.CubeTextureLoader.prototype={constructor:THREE.CubeTextureLoader,load:function(a,b,c,d){function e(c){g.load(a[c],function(a){f.images[c]=a;h++;6===h&&(f.needsUpdate=!0,b&&b(f))},void 0,d)}var f=new THREE.CubeTexture,g=new THREE.ImageLoader(this.manager);g.setCrossOrigin(this.crossOrigin);g.setPath(this.path);var h=0;for(c=0;c<a.length;++c)e(c);return f},setCrossOrigin:function(a){this.crossOrigin=a},setPath:function(a){this.path=a}};
 THREE.DataTextureLoader=THREE.BinaryTextureLoader=function(a){this.manager=void 0!==a?a:THREE.DefaultLoadingManager;this._parser=null};
 THREE.BinaryTextureLoader.prototype={constructor:THREE.BinaryTextureLoader,load:function(a,b,c,d){var e=this,f=new THREE.DataTexture,g=new THREE.XHRLoader(this.manager);g.setResponseType("arraybuffer");g.load(a,function(a){if(a=e._parser(a))void 0!==a.image?f.image=a.image:void 0!==a.data&&(f.image.width=a.width,f.image.height=a.height,f.image.data=a.data),f.wrapS=void 0!==a.wrapS?a.wrapS:THREE.ClampToEdgeWrapping,f.wrapT=void 0!==a.wrapT?a.wrapT:THREE.ClampToEdgeWrapping,f.magFilter=void 0!==a.magFilter?
 a.magFilter:THREE.LinearFilter,f.minFilter=void 0!==a.minFilter?a.minFilter:THREE.LinearMipMapLinearFilter,f.anisotropy=void 0!==a.anisotropy?a.anisotropy:1,void 0!==a.format&&(f.format=a.format),void 0!==a.type&&(f.type=a.type),void 0!==a.mipmaps&&(f.mipmaps=a.mipmaps),1===a.mipmapCount&&(f.minFilter=THREE.LinearFilter),f.needsUpdate=!0,b&&b(f,a)},c,d);return f}};THREE.CompressedTextureLoader=function(a){this.manager=void 0!==a?a:THREE.DefaultLoadingManager;this._parser=null};
@@ -476,7 +476,7 @@ a.premultiplyAlpha;this.flipY=a.flipY;this.unpackAlignment=a.unpackAlignment;thi
 if(void 0!==this.image){var c=this.image;void 0===c.uuid&&(c.uuid=THREE.Math.generateUUID());if(void 0===a.images[c.uuid]){var d=a.images,e=c.uuid,f=c.uuid,g;void 0!==c.toDataURL?g=c:(g=document.createElement("canvas"),g.width=c.width,g.height=c.height,g.getContext("2d").drawImage(c,0,0,c.width,c.height));g=2048<g.width||2048<g.height?g.toDataURL("image/jpeg",.6):g.toDataURL("image/png");d[e]={uuid:f,url:g}}b.image=c.uuid}return a.textures[this.uuid]=b},dispose:function(){this.dispatchEvent({type:"dispose"})},
 transformUv:function(a){if(this.mapping===THREE.UVMapping){a.multiply(this.repeat);a.add(this.offset);if(0>a.x||1<a.x)switch(this.wrapS){case THREE.RepeatWrapping:a.x-=Math.floor(a.x);break;case THREE.ClampToEdgeWrapping:a.x=0>a.x?0:1;break;case THREE.MirroredRepeatWrapping:1===Math.abs(Math.floor(a.x)%2)?a.x=Math.ceil(a.x)-a.x:a.x-=Math.floor(a.x)}if(0>a.y||1<a.y)switch(this.wrapT){case THREE.RepeatWrapping:a.y-=Math.floor(a.y);break;case THREE.ClampToEdgeWrapping:a.y=0>a.y?0:1;break;case THREE.MirroredRepeatWrapping:1===
 Math.abs(Math.floor(a.y)%2)?a.y=Math.ceil(a.y)-a.y:a.y-=Math.floor(a.y)}this.flipY&&(a.y=1-a.y)}}};THREE.EventDispatcher.prototype.apply(THREE.Texture.prototype);THREE.TextureIdCount=0;THREE.CanvasTexture=function(a,b,c,d,e,f,g,h,k){THREE.Texture.call(this,a,b,c,d,e,f,g,h,k);this.needsUpdate=!0};THREE.CanvasTexture.prototype=Object.create(THREE.Texture.prototype);THREE.CanvasTexture.prototype.constructor=THREE.CanvasTexture;
-THREE.CubeTexture=function(a,b,c,d,e,f,g,h,k){b=void 0!==b?b:THREE.CubeReflectionMapping;THREE.Texture.call(this,a,b,c,d,e,f,g,h,k);this.images=a;this.flipY=!1};THREE.CubeTexture.prototype=Object.create(THREE.Texture.prototype);THREE.CubeTexture.prototype.constructor=THREE.CubeTexture;THREE.CubeTexture.prototype.copy=function(a){THREE.Texture.prototype.copy.call(this,a);this.images=a.images;return this};
+THREE.CubeTexture=function(a,b,c,d,e,f,g,h,k){a=void 0!==a?a:[];b=void 0!==b?b:THREE.CubeReflectionMapping;THREE.Texture.call(this,a,b,c,d,e,f,g,h,k);this.flipY=!1};THREE.CubeTexture.prototype=Object.create(THREE.Texture.prototype);THREE.CubeTexture.prototype.constructor=THREE.CubeTexture;Object.defineProperty(THREE.CubeTexture.prototype,"images",{get:function(){return this.image},set:function(a){this.image=a}});
 THREE.CompressedTexture=function(a,b,c,d,e,f,g,h,k,l,p){THREE.Texture.call(this,null,f,g,h,k,l,d,e,p);this.image={width:b,height:c};this.mipmaps=a;this.generateMipmaps=this.flipY=!1};THREE.CompressedTexture.prototype=Object.create(THREE.Texture.prototype);THREE.CompressedTexture.prototype.constructor=THREE.CompressedTexture;
 THREE.DataTexture=function(a,b,c,d,e,f,g,h,k,l,p){THREE.Texture.call(this,null,f,g,h,k,l,d,e,p);this.image={data:a,width:b,height:c};this.magFilter=void 0!==k?k:THREE.NearestFilter;this.minFilter=void 0!==l?l:THREE.NearestFilter;this.generateMipmaps=this.flipY=!1};THREE.DataTexture.prototype=Object.create(THREE.Texture.prototype);THREE.DataTexture.prototype.constructor=THREE.DataTexture;
 THREE.VideoTexture=function(a,b,c,d,e,f,g,h,k){function l(){requestAnimationFrame(l);a.readyState===a.HAVE_ENOUGH_DATA&&(p.needsUpdate=!0)}THREE.Texture.call(this,a,b,c,d,e,f,g,h,k);this.generateMipmaps=!1;var p=this;l()};THREE.VideoTexture.prototype=Object.create(THREE.Texture.prototype);THREE.VideoTexture.prototype.constructor=THREE.VideoTexture;THREE.Group=function(){THREE.Object3D.call(this);this.type="Group"};THREE.Group.prototype=Object.create(THREE.Object3D.prototype);