diff --git a/pom.xml b/pom.xml
index 85bd3fe..731da99 100644
--- a/pom.xml
+++ b/pom.xml
@@ -48,8 +48,8 @@
 		<maven.compiler.target>1.6</maven.compiler.target>
 		<maven.compiler.source>1.6</maven.compiler.source>
 
-		<gdx.version>1.0.0</gdx.version>
-		<gdx-toolbox.version>0.1</gdx-toolbox.version>
+		<gdx.version>1.7.0</gdx.version>
+		<gdx-toolbox.version>0.2-SNAPSHOT</gdx-toolbox.version>
 	</properties>
 
 	<dependencies>
diff --git a/src/main/java/ca/blarg/gdx/tilemap3d/ChunkVertexGenerator.java b/src/main/java/ca/blarg/gdx/tilemap3d/ChunkVertexGenerator.java
index 0dbd6bc..c4356d5 100644
--- a/src/main/java/ca/blarg/gdx/tilemap3d/ChunkVertexGenerator.java
+++ b/src/main/java/ca/blarg/gdx/tilemap3d/ChunkVertexGenerator.java
@@ -41,13 +41,13 @@ public class ChunkVertexGenerator {
 
 		builder.begin(
 			VertexAttributes.Usage.Position |
-			VertexAttributes.Usage.Color |
+			VertexAttributes.Usage.ColorUnpacked |
 			VertexAttributes.Usage.Normal |
 			VertexAttributes.Usage.TextureCoordinates
 		);
 		alphaBuilder.begin(
 			VertexAttributes.Usage.Position |
-			VertexAttributes.Usage.Color |
+			VertexAttributes.Usage.ColorUnpacked |
 			VertexAttributes.Usage.Normal |
 			VertexAttributes.Usage.TextureCoordinates
 		);
diff --git a/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/BaseModelTileMesh.java b/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/BaseModelTileMesh.java
index 71fc62c..514a0c9 100644
--- a/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/BaseModelTileMesh.java
+++ b/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/BaseModelTileMesh.java
@@ -22,6 +22,7 @@ import java.nio.ShortBuffer;
 public abstract class BaseModelTileMesh extends TileMesh {
 	private final Vector3 tmpPosition = new Vector3();
 	private final Vector3 tmpNormal = new Vector3();
+	private final Vector3 tmpDimensions = new Vector3();
 	private final BoundingBox tmpBounds = new BoundingBox();
 
 	public BaseModelTileMesh(byte opaqueSides, boolean alpha, float translucency, byte lightValue, Color color) {
@@ -54,7 +55,7 @@ public abstract class BaseModelTileMesh extends TileMesh {
 				destVertices.setPos(tmpPosition);
 				offset += 3;
 
-				if (meshPart.mesh.getVertexAttribute(VertexAttributes.Usage.Color) != null) {
+				if (meshPart.mesh.getVertexAttribute(VertexAttributes.Usage.ColorUnpacked) != null) {
 					// TODO: blend mesh color and source model color somehow?
 					destVertices.setCol(vertices.get(offset), vertices.get(offset + 1), vertices.get(offset + 2), vertices.get(offset + 3));
 					offset += 4;
@@ -84,8 +85,8 @@ public abstract class BaseModelTileMesh extends TileMesh {
 			}
 		}
 
-		for (int i = 0; i < node.children.size; ++i)
-			collectModelNodeVertices(node.children.get(i), destVertices, textures, color, scaleFactor, positionOffset);
+		for (int i = 0; i < node.getChildCount(); ++i)
+			collectModelNodeVertices(node.getChild(i), destVertices, textures, color, scaleFactor, positionOffset);
 	}
 
 	protected void collectModelNodeVertexPositions(Node node, Array<Vector3> destVertices, Vector3 scaleFactor, Vector3 positionOffset) {
@@ -110,13 +111,14 @@ public abstract class BaseModelTileMesh extends TileMesh {
 			}
 		}
 
-		for (int i = 0; i < node.children.size; ++i)
-			collectModelNodeVertexPositions(node.children.get(i), destVertices, scaleFactor, positionOffset);
+		for (int i = 0; i < node.getChildCount(); ++i)
+			collectModelNodeVertexPositions(node.getChild(i), destVertices, scaleFactor, positionOffset);
 	}
 
 	protected void getScaleFactorForModel(Model model, Vector3 scaleToSize, Vector3 out) {
 		model.calculateBoundingBox(tmpBounds);
-		MathHelpers.getScaleFactor(tmpBounds.getDimensions(), scaleToSize, out);
+		tmpBounds.getDimensions(tmpDimensions);
+		MathHelpers.getScaleFactor(tmpDimensions, scaleToSize, out);
 	}
 
 	protected int countModelVertices(Model model) {
diff --git a/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/ModelTileMesh.java b/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/ModelTileMesh.java
index 7b13e61..66040c2 100644
--- a/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/ModelTileMesh.java
+++ b/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/ModelTileMesh.java
@@ -13,6 +13,7 @@ import com.badlogic.gdx.utils.Array;
 public class ModelTileMesh extends BaseModelTileMesh {
 	static final Vector3 tmpPosition = new Vector3();
 	static final Vector3 tmpNormal = new Vector3();
+	static final Vector3 tmpDimensions = new Vector3();
 	static final BoundingBox tmpModelBounds = new BoundingBox();
 	static final Vector3 tmpScaleFactor = new Vector3();
 
@@ -74,11 +75,12 @@ public class ModelTileMesh extends BaseModelTileMesh {
 		);
 
 		model.calculateBoundingBox(tmpModelBounds);
+		tmpModelBounds.getDimensions(tmpDimensions);
 		if (scaleToSize != null) {
-			MathHelpers.getScaleFactor(tmpModelBounds.getDimensions(), scaleToSize, tmpScaleFactor);
+			MathHelpers.getScaleFactor(tmpDimensions, scaleToSize, tmpScaleFactor);
 			bounds = new BoundingBox().set(Vector3.Zero, scaleToSize);
 		} else {
-			bounds = new BoundingBox().set(Vector3.Zero, tmpModelBounds.getDimensions());
+			bounds = new BoundingBox().set(Vector3.Zero, tmpDimensions);
 			tmpScaleFactor.set(1.0f, 1.0f, 1.0f);
 		}
 
@@ -89,7 +91,8 @@ public class ModelTileMesh extends BaseModelTileMesh {
 	private void setupCollisionVertices(Model collisionModel) {
 		if (scaleToSize != null) {
 			collisionModel.calculateBoundingBox(tmpModelBounds);
-			MathHelpers.getScaleFactor(tmpModelBounds.getDimensions(), scaleToSize, tmpScaleFactor);
+			tmpModelBounds.getDimensions(tmpDimensions);
+			MathHelpers.getScaleFactor(tmpDimensions, scaleToSize, tmpScaleFactor);
 		} else
 			tmpScaleFactor.set(1.0f, 1.0f, 1.0f);
 
diff --git a/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/MultiModelTileMesh.java b/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/MultiModelTileMesh.java
index d34f21a..d75057b 100644
--- a/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/MultiModelTileMesh.java
+++ b/src/main/java/ca/blarg/gdx/tilemap3d/tilemesh/MultiModelTileMesh.java
@@ -85,6 +85,7 @@ public class MultiModelTileMesh extends BaseModelTileMesh {
 
 		bounds = new BoundingBox();
 		BoundingBox tmpBounds = new BoundingBox();
+		Vector3 tmpDimensions = new Vector3();
 
 		// collect the vertices from each of the models provided
 		for (int i = 0; i < models.length; ++i) {
@@ -102,11 +103,12 @@ public class MultiModelTileMesh extends BaseModelTileMesh {
 			Vector3 scaleFactor = new Vector3();
 
 			submodel.calculateBoundingBox(tmpBounds);
+			tmpBounds.getDimensions(tmpDimensions);
 			if (scaleToSize != null) {
-				MathHelpers.getScaleFactor(tmpBounds.getDimensions(), scaleToSize, scaleFactor);
+				MathHelpers.getScaleFactor(tmpDimensions, scaleToSize, scaleFactor);
 				submodelBounds.set(Vector3.Zero, scaleToSize);
 			} else {
-				submodelBounds.set(Vector3.Zero, tmpBounds.getDimensions());
+				submodelBounds.set(Vector3.Zero, tmpDimensions);
 				scaleFactor.set(1.0f, 1.0f, 1.0f);
 			}
 			bounds.ext(submodelBounds);
@@ -119,11 +121,12 @@ public class MultiModelTileMesh extends BaseModelTileMesh {
 
 		// figure out what the final scaled bounds and scale factor will be
 		Vector3 scaleFactor = new Vector3();
+		bounds.getDimensions(tmpDimensions);
 		if (scaleToSize != null) {
-			MathHelpers.getScaleFactor(bounds.getDimensions(), scaleToSize, scaleFactor);
+			MathHelpers.getScaleFactor(tmpDimensions, scaleToSize, scaleFactor);
 			bounds = new BoundingBox().set(Vector3.Zero, scaleToSize);
 		} else {
-			bounds = new BoundingBox().set(Vector3.Zero, bounds.getDimensions());
+			bounds = new BoundingBox().set(Vector3.Zero, tmpDimensions);
 			scaleFactor.set(1.0f, 1.0f, 1.0f);
 		}
 
@@ -140,11 +143,12 @@ public class MultiModelTileMesh extends BaseModelTileMesh {
 	private void setupCollisionVertices(Model collisionModel) {
 		if (collisionModel != null) {
 			BoundingBox tmpBounds = new BoundingBox();
+			Vector3 tmpDimensions = new Vector3();
 			Vector3 scaleFactor = new Vector3();
 
 			if (scaleToSize != null) {
 				collisionModel.calculateBoundingBox(tmpBounds);
-				MathHelpers.getScaleFactor(tmpBounds.getDimensions(), scaleToSize, scaleFactor);
+				MathHelpers.getScaleFactor(tmpDimensions, scaleToSize, scaleFactor);
 			} else
 				scaleFactor.set(1.0f, 1.0f, 1.0f);