diff --git a/SPD-classes/src/main/java/com/watabou/noosa/Group.java b/SPD-classes/src/main/java/com/watabou/noosa/Group.java
index eb83c6cfa..8640a605a 100644
--- a/SPD-classes/src/main/java/com/watabou/noosa/Group.java
+++ b/SPD-classes/src/main/java/com/watabou/noosa/Group.java
@@ -41,7 +41,7 @@ public class Group extends Gizmo {
 	}
 	
 	@Override
-	public void destroy() {
+	public synchronized void destroy() {
 		super.destroy();
 		for (int i=0; i < length; i++) {
 			Gizmo g = members.get( i );
@@ -56,7 +56,7 @@ public class Group extends Gizmo {
 	}
 	
 	@Override
-	public void update() {
+	public synchronized void update() {
 		for (int i=0; i < length; i++) {
 			Gizmo g = members.get( i );
 			if (g != null && g.exists && g.active
@@ -69,7 +69,7 @@ public class Group extends Gizmo {
 	}
 	
 	@Override
-	public void draw() {
+	public synchronized void draw() {
 		for (int i=0; i < length; i++) {
 			Gizmo g = members.get( i );
 			if (g != null && g.exists && g.isVisible()) {
@@ -79,7 +79,7 @@ public class Group extends Gizmo {
 	}
 	
 	@Override
-	public void kill() {
+	public synchronized void kill() {
 		// A killed group keeps all its members,
 		// but they get killed too
 		for (int i=0; i < length; i++) {
@@ -92,11 +92,11 @@ public class Group extends Gizmo {
 		super.kill();
 	}
 	
-	public int indexOf( Gizmo g ) {
+	public synchronized int indexOf( Gizmo g ) {
 		return members.indexOf( g );
 	}
 	
-	public Gizmo add( Gizmo g ) {
+	public synchronized Gizmo add( Gizmo g ) {
 		
 		if (g.parent == this) {
 			return g;
@@ -121,7 +121,7 @@ public class Group extends Gizmo {
 		return g;
 	}
 	
-	public Gizmo addToFront( Gizmo g){
+	public synchronized Gizmo addToFront( Gizmo g){
 
 		if (g.parent == this) {
 			return g;
@@ -151,7 +151,7 @@ public class Group extends Gizmo {
 		return g;
 	}
 	
-	public Gizmo addToBack( Gizmo g ) {
+	public synchronized Gizmo addToBack( Gizmo g ) {
 		
 		if (g.parent == this) {
 			sendToBack( g );
@@ -174,7 +174,7 @@ public class Group extends Gizmo {
 		return g;
 	}
 	
-	public Gizmo recycle( Class<? extends Gizmo> c ) {
+	public synchronized Gizmo recycle( Class<? extends Gizmo> c ) {
 
 		Gizmo g = getFirstAvailable( c );
 		if (g != null) {
@@ -198,7 +198,7 @@ public class Group extends Gizmo {
 	}
 	
 	// Fast removal - replacing with null
-	public Gizmo erase( Gizmo g ) {
+	public synchronized Gizmo erase( Gizmo g ) {
 		int index = members.indexOf( g );
 
 		if (index != -1) {
@@ -211,7 +211,7 @@ public class Group extends Gizmo {
 	}
 	
 	// Real removal
-	public Gizmo remove( Gizmo g ) {
+	public synchronized Gizmo remove( Gizmo g ) {
 		if (members.remove( g )) {
 			length--;
 			g.parent = null;
@@ -221,7 +221,7 @@ public class Group extends Gizmo {
 		}
 	}
 	
-	public Gizmo replace( Gizmo oldOne, Gizmo newOne ) {
+	public synchronized Gizmo replace( Gizmo oldOne, Gizmo newOne ) {
 		int index = members.indexOf( oldOne );
 		if (index != -1) {
 			members.set( index, newOne );
@@ -233,7 +233,7 @@ public class Group extends Gizmo {
 		}
 	}
 	
-	public Gizmo getFirstAvailable( Class<? extends Gizmo> c ) {
+	public synchronized Gizmo getFirstAvailable( Class<? extends Gizmo> c ) {
 		
 		for (int i=0; i < length; i++) {
 			Gizmo g = members.get( i );
@@ -245,7 +245,7 @@ public class Group extends Gizmo {
 		return null;
 	}
 	
-	public int countLiving() {
+	public synchronized int countLiving() {
 		
 		int count = 0;
 		
@@ -259,7 +259,7 @@ public class Group extends Gizmo {
 		return count;
 	}
 	
-	public int countDead() {
+	public synchronized int countDead() {
 		
 		int count = 0;
 		
@@ -273,7 +273,7 @@ public class Group extends Gizmo {
 		return count;
 	}
 	
-	public Gizmo random() {
+	public synchronized Gizmo random() {
 		if (length > 0) {
 			return members.get( (int)(Math.random() * length) );
 		} else {
@@ -281,7 +281,7 @@ public class Group extends Gizmo {
 		}
 	}
 	
-	public void clear() {
+	public synchronized void clear() {
 		for (int i=0; i < length; i++) {
 			Gizmo g = members.get( i );
 			if (g != null) {
@@ -292,7 +292,7 @@ public class Group extends Gizmo {
 		length = 0;
 	}
 	
-	public Gizmo bringToFront( Gizmo g ) {
+	public synchronized Gizmo bringToFront( Gizmo g ) {
 		if (members.contains( g )) {
 			members.remove( g );
 			members.add( g );
@@ -302,7 +302,7 @@ public class Group extends Gizmo {
 		}
 	}
 	
-	public Gizmo sendToBack( Gizmo g ) {
+	public synchronized Gizmo sendToBack( Gizmo g ) {
 		if (members.contains( g )) {
 			members.remove( g );
 			members.add( 0, g );
diff --git a/SPD-classes/src/main/java/com/watabou/noosa/Image.java b/SPD-classes/src/main/java/com/watabou/noosa/Image.java
index 46994522f..31e010491 100644
--- a/SPD-classes/src/main/java/com/watabou/noosa/Image.java
+++ b/SPD-classes/src/main/java/com/watabou/noosa/Image.java
@@ -148,6 +148,9 @@ public class Image extends Visual {
 	
 	@Override
 	public void draw() {
+
+		if (texture == null)
+			return;
 		
 		super.draw();