diff --git a/CHANGES.md b/CHANGES.md
index ece32ea7a27a..b2c3e60474df 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -18,6 +18,8 @@ Change Log
     * 
 * Fixed a crash that would occur when using dynamic `distanceDisplayCondition` properties. [#4403](https://github.com/AnalyticalGraphicsInc/cesium/pull/4403)
 * Fixed a bug affected models with multiple meshes without indices. [#4237](https://github.com/AnalyticalGraphicsInc/cesium/issues/4237)
+* Fixed a glTF transparency bug where `blendFuncSeparate` parameters were loaded in the wrong order. [#4435](https://github.com/AnalyticalGraphicsInc/cesium/pull/4435)
+* Fixed a bug where creating a custom geometry with attributes and indices that have values that are not a typed array would cause a crash. [#4419](https://github.com/AnalyticalGraphicsInc/cesium/pull/4419)
 
 ### 1.26 - 2016-10-03
 
diff --git a/Source/Scene/Model.js b/Source/Scene/Model.js
index a150e35dfaac..80b533c7f00a 100644
--- a/Source/Scene/Model.js
+++ b/Source/Scene/Model.js
@@ -2427,9 +2427,9 @@ define([
             WebGLConstants.FUNC_ADD,
             WebGLConstants.FUNC_ADD]);
         var blendFuncSeparate = defaultValue(statesFunctions.blendFuncSeparate, [
-            WebGLConstants.ONE,
             WebGLConstants.ONE,
             WebGLConstants.ZERO,
+            WebGLConstants.ONE,
             WebGLConstants.ZERO]);
         var colorMask = defaultValue(statesFunctions.colorMask, [true, true, true, true]);
         var depthRange = defaultValue(statesFunctions.depthRange, [0.0, 1.0]);
@@ -2483,8 +2483,8 @@ define([
                 equationRgb : blendEquationSeparate[0],
                 equationAlpha : blendEquationSeparate[1],
                 functionSourceRgb : blendFuncSeparate[0],
-                functionSourceAlpha : blendFuncSeparate[1],
-                functionDestinationRgb : blendFuncSeparate[2],
+                functionDestinationRgb : blendFuncSeparate[1],
+                functionSourceAlpha : blendFuncSeparate[2],
                 functionDestinationAlpha : blendFuncSeparate[3]
             }
         });
diff --git a/Source/Scene/Primitive.js b/Source/Scene/Primitive.js
index 29f69c199c36..4aa6975e3c51 100644
--- a/Source/Scene/Primitive.js
+++ b/Source/Scene/Primitive.js
@@ -683,7 +683,11 @@ define([
         var indices;
         if (defined(geometry.indices)) {
             var sourceValues = geometry.indices;
-            indices = new sourceValues.constructor(sourceValues);
+            if (isArray(sourceValues)) {
+                indices = sourceValues.slice(0);
+            } else {
+                indices = new sourceValues.constructor(sourceValues);
+            }
         }
 
         return new Geometry({
diff --git a/Source/Shaders/Builtin/Functions/getSpecular.glsl b/Source/Shaders/Builtin/Functions/getSpecular.glsl
index 57998b693cd9..7849670041ac 100644
--- a/Source/Shaders/Builtin/Functions/getSpecular.glsl
+++ b/Source/Shaders/Builtin/Functions/getSpecular.glsl
@@ -22,5 +22,8 @@ float czm_getSpecular(vec3 lightDirectionEC, vec3 toEyeEC, vec3 normalEC, float
 {
     vec3 toReflectedLight = reflect(-lightDirectionEC, normalEC);
     float specular = max(dot(toReflectedLight, toEyeEC), 0.0);
-    return pow(specular, shininess);
+
+    // pow has undefined behavior if both parameters <= 0.
+    // Prevent this by making sure shininess is at least czm_epsilon2.
+    return pow(specular, max(shininess, czm_epsilon2));
 }
\ No newline at end of file
diff --git a/Specs/Scene/GeometryRenderingSpec.js b/Specs/Scene/GeometryRenderingSpec.js
index 03106a12ed14..e732ef84f9d6 100644
--- a/Specs/Scene/GeometryRenderingSpec.js
+++ b/Specs/Scene/GeometryRenderingSpec.js
@@ -1603,6 +1603,55 @@ defineSuite([
                 pickGeometry(instance);
             });
         }, 'WebGL');
+
+        describe('with native arrays as attributes and indices', function() {
+            var instance;
+            beforeAll(function() {
+                instance = new GeometryInstance({
+                    geometry : new Geometry({
+                        attributes : {
+                            position : new GeometryAttribute({
+                                componentDatatype : ComponentDatatype.DOUBLE,
+                                componentsPerAttribute : 3,
+                                values : [
+                                    1000000.0, 0.0, 0.0,
+                                    1000000.0, 1000000.0, 0.0,
+                                    1000000.0, 0.0, 1000000.0,
+                                    1000000.0, 1000000.0, 1000000.0
+                                ]
+                            })
+                        },
+                        indices : [0, 1, 2, 2, 1, 3],
+                        primitiveType : PrimitiveType.TRIANGLES
+                    }),
+                    modelMatrix : Matrix4.multiplyByTranslation(Transforms.eastNorthUpToFixedFrame(
+                        Cartesian3.fromDegrees(0,0)), new Cartesian3(0.0, 0.0, 10000.0), new Matrix4()),
+                    id : 'customWithIndices',
+                    attributes : {
+                        color : new ColorGeometryInstanceAttribute(1.0, 1.0, 1.0, 1.0)
+                    }
+                });
+                geometry = instance.geometry;
+                geometry.boundingSphere = BoundingSphere.fromVertices(instance.geometry.attributes.position.values);
+                geometry.boundingSphereWC = BoundingSphere.transform(geometry.boundingSphere, instance.modelMatrix);
+            });
+
+            it('3D', function() {
+                render3D(instance);
+            });
+
+            it('Columbus view', function() {
+                renderCV(instance);
+            });
+
+            it('2D', function() {
+                render2D(instance);
+            });
+
+            it('pick', function() {
+                pickGeometry(instance);
+            });
+        }, 'WebGL');
     });
 
 }, 'WebGL');
diff --git a/package.json b/package.json
index 2393d1589afa..c44797d5621a 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
   },
   "devDependencies": {
     "almond": "0.3.3",
-    "aws-sdk": "2.6.7",
+    "aws-sdk": "2.6.9",
     "bluebird": "3.4.6",
     "compressible": "2.0.8",
     "compression": "1.6.2",
@@ -67,7 +67,7 @@
     "request": "2.75.0",
     "rimraf": "2.5.4",
     "strip-comments": "0.3.2",
-    "yargs": "6.0.0"
+    "yargs": "6.2.0"
   },
   "scripts": {
     "start": "node server.js",