diff --git a/jme3-core/src/main/java/com/jme3/shadow/AbstractShadowFilter.java b/jme3-core/src/main/java/com/jme3/shadow/AbstractShadowFilter.java
index 0d839be29..aa80fa0c6 100644
--- a/jme3-core/src/main/java/com/jme3/shadow/AbstractShadowFilter.java
+++ b/jme3-core/src/main/java/com/jme3/shadow/AbstractShadowFilter.java
@@ -45,6 +45,8 @@ import com.jme3.renderer.RenderManager;
 import com.jme3.renderer.ViewPort;
 import com.jme3.renderer.queue.RenderQueue;
 import com.jme3.texture.FrameBuffer;
+import com.jme3.util.clone.Cloner;
+import com.jme3.util.clone.JmeCloneable;
 
 import java.io.IOException;
 
@@ -55,7 +57,7 @@ import java.io.IOException;
  *
  * @author Rémy Bouquet aka Nehon
  */
-public abstract class AbstractShadowFilter<T extends AbstractShadowRenderer> extends Filter {
+public abstract class AbstractShadowFilter<T extends AbstractShadowRenderer> extends Filter implements Cloneable, JmeCloneable {
 
     protected T shadowRenderer;
     protected ViewPort viewPort;
@@ -303,17 +305,31 @@ public abstract class AbstractShadowFilter<T extends AbstractShadowRenderer> ext
         return shadowRenderer.getEdgeFilteringMode();
     }
 
+    @Override
+    public AbstractShadowFilter<T> jmeClone() {
+        try {
+            return (AbstractShadowFilter<T>) super.clone();
+        } catch (final CloneNotSupportedException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public void cloneFields(final Cloner cloner, final Object original) {
+        material = cloner.clone(material);
+        shadowRenderer = cloner.clone(shadowRenderer);
+        shadowRenderer.setPostShadowMaterial(material);
+    }
+
     @Override
     public void write(JmeExporter ex) throws IOException {
         super.write(ex);
         OutputCapsule oc = ex.getCapsule(this);
-
     }
 
     @Override
     public void read(JmeImporter im) throws IOException {
         super.read(im);
         InputCapsule ic = im.getCapsule(this);
-
     }
 }
diff --git a/jme3-core/src/main/java/com/jme3/shadow/AbstractShadowRenderer.java b/jme3-core/src/main/java/com/jme3/shadow/AbstractShadowRenderer.java
index 13d8d50e4..dff4da90d 100644
--- a/jme3-core/src/main/java/com/jme3/shadow/AbstractShadowRenderer.java
+++ b/jme3-core/src/main/java/com/jme3/shadow/AbstractShadowRenderer.java
@@ -45,7 +45,6 @@ import com.jme3.math.Vector2f;
 import com.jme3.math.Vector3f;
 import com.jme3.post.SceneProcessor;
 import com.jme3.renderer.Camera;
-import com.jme3.renderer.Caps;
 import com.jme3.renderer.RenderManager;
 import com.jme3.renderer.Renderer;
 import com.jme3.renderer.ViewPort;
@@ -63,10 +62,13 @@ import com.jme3.texture.Texture.MinFilter;
 import com.jme3.texture.Texture.ShadowCompareMode;
 import com.jme3.texture.Texture2D;
 import com.jme3.ui.Picture;
+import com.jme3.util.clone.Cloner;
+import com.jme3.util.clone.JmeCloneable;
 
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.logging.Logger;
 
 /**
  * abstract shadow renderer that holds commons feature to have for a shadow
@@ -74,7 +76,9 @@ import java.util.List;
  *
  * @author Rémy Bouquet aka Nehon
  */
-public abstract class AbstractShadowRenderer implements SceneProcessor, Savable {
+public abstract class AbstractShadowRenderer implements SceneProcessor, Savable, JmeCloneable, Cloneable {
+
+    protected static final Logger logger = Logger.getLogger(AbstractShadowRenderer.class.getName());
 
     protected int nbShadowMaps = 1;
     protected float shadowMapSize;
@@ -678,8 +682,7 @@ public abstract class AbstractShadowRenderer implements SceneProcessor, Savable
     }
     
     /**
-     * returns true if the light source bounding box is in the view frustum
-     * @return 
+     * @return true if the light source bounding box is in the view frustum
      */
     protected abstract boolean checkCulling(Camera viewCam);
     
@@ -748,7 +751,6 @@ public abstract class AbstractShadowRenderer implements SceneProcessor, Savable
     @Deprecated
     public void setFlushQueues(boolean flushQueues) {}
 
-
     /**
      * returns the pre shadows pass render state.
      * use it to adjust the RenderState parameters of the pre shadow pass.
@@ -790,13 +792,28 @@ public abstract class AbstractShadowRenderer implements SceneProcessor, Savable
         return renderBackFacesShadows != null?renderBackFacesShadows:false;
     }
 
+    @Override
+    public Object jmeClone() {
+        try {
+            return super.clone();
+        } catch (final CloneNotSupportedException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public void cloneFields(final Cloner cloner, final Object original) {
+        forcedRenderState = cloner.clone(forcedRenderState);
+        init(assetManager, nbShadowMaps, (int) shadowMapSize);
+    }
+
     /**
      * De-serialize this instance, for example when loading from a J3O file.
      *
      * @param im importer (not null)
      */
     public void read(JmeImporter im) throws IOException {
-        InputCapsule ic = (InputCapsule) im.getCapsule(this);
+        InputCapsule ic = im.getCapsule(this);
         assetManager = im.getAssetManager();
         nbShadowMaps = ic.readInt("nbShadowMaps", 1);
         shadowMapSize = ic.readFloat("shadowMapSize", 0f);
@@ -815,7 +832,7 @@ public abstract class AbstractShadowRenderer implements SceneProcessor, Savable
      * @param ex exporter (not null)
      */
     public void write(JmeExporter ex) throws IOException {
-        OutputCapsule oc = (OutputCapsule) ex.getCapsule(this);
+        OutputCapsule oc = ex.getCapsule(this);
         oc.write(nbShadowMaps, "nbShadowMaps", 1);
         oc.write(shadowMapSize, "shadowMapSize", 0);
         oc.write(shadowIntensity, "shadowIntensity", 0.7f);
diff --git a/jme3-core/src/main/java/com/jme3/shadow/DirectionalLightShadowRenderer.java b/jme3-core/src/main/java/com/jme3/shadow/DirectionalLightShadowRenderer.java
index 196bfbe7c..1ac016f15 100644
--- a/jme3-core/src/main/java/com/jme3/shadow/DirectionalLightShadowRenderer.java
+++ b/jme3-core/src/main/java/com/jme3/shadow/DirectionalLightShadowRenderer.java
@@ -46,6 +46,8 @@ import com.jme3.renderer.queue.GeometryList;
 import com.jme3.renderer.queue.RenderQueue;
 import com.jme3.scene.Node;
 import com.jme3.scene.Spatial;
+import com.jme3.util.clone.Cloner;
+
 import java.io.IOException;
 
 /**
@@ -112,8 +114,6 @@ public class DirectionalLightShadowRenderer extends AbstractShadowRenderer {
     protected void initFrustumCam() {
         //nothing to do
     }
-    
-    
 
     /**
      * return the light used to cast shadows
@@ -136,6 +136,11 @@ public class DirectionalLightShadowRenderer extends AbstractShadowRenderer {
     @Override
     protected void updateShadowCams(Camera viewCam) {
 
+        if (light == null) {
+            logger.warning("The light can't be null for a " + getClass().getName());
+            return;
+        }
+
         float zFar = zFarOverride;
         if (zFar == 0) {
             zFar = viewCam.getFrustumFar();
@@ -215,7 +220,7 @@ public class DirectionalLightShadowRenderer extends AbstractShadowRenderer {
     @Override
     protected void setMaterialParameters(Material material) {
         material.setColor("Splits", splits);
-        material.setVector3("LightDir", light.getDirection());
+        material.setVector3("LightDir", light == null ? new Vector3f() : light.getDirection());
         if (fadeInfo != null) {
             material.setVector2("FadeInfo", fadeInfo);
         }
@@ -248,11 +253,9 @@ public class DirectionalLightShadowRenderer extends AbstractShadowRenderer {
     public void setLambda(float lambda) {
         this.lambda = lambda;
     }
-
     
     /**
-     * retruns true if stabilization is enabled
-     * @return 
+     * @return true if stabilization is enabled
      */
     public boolean isEnabledStabilization() {
         return stabilize;
@@ -267,11 +270,18 @@ public class DirectionalLightShadowRenderer extends AbstractShadowRenderer {
     public void setEnabledStabilization(boolean stabilize) {
         this.stabilize = stabilize;
     }
-    
+
+    @Override
+    public void cloneFields(final Cloner cloner, final Object original) {
+        light = cloner.clone(light);
+        init(nbShadowMaps, (int) shadowMapSize);
+        super.cloneFields(cloner, original);
+    }
+
     @Override
     public void read(JmeImporter im) throws IOException {
         super.read(im);
-        InputCapsule ic = (InputCapsule) im.getCapsule(this);
+        InputCapsule ic = im.getCapsule(this);
         lambda = ic.readFloat("lambda", 0.65f);
         zFarOverride = ic.readInt("zFarOverride", 0);
         light = (DirectionalLight) ic.readSavable("light", null);
@@ -283,7 +293,7 @@ public class DirectionalLightShadowRenderer extends AbstractShadowRenderer {
     @Override
     public void write(JmeExporter ex) throws IOException {
         super.write(ex);
-        OutputCapsule oc = (OutputCapsule) ex.getCapsule(this);
+        OutputCapsule oc = ex.getCapsule(this);
         oc.write(lambda, "lambda", 0.65f);
         oc.write(zFarOverride, "zFarOverride", 0);
         oc.write(light, "light", null);
diff --git a/jme3-core/src/main/java/com/jme3/shadow/PointLightShadowRenderer.java b/jme3-core/src/main/java/com/jme3/shadow/PointLightShadowRenderer.java
index f4a6455f1..407f72367 100644
--- a/jme3-core/src/main/java/com/jme3/shadow/PointLightShadowRenderer.java
+++ b/jme3-core/src/main/java/com/jme3/shadow/PointLightShadowRenderer.java
@@ -46,6 +46,8 @@ import com.jme3.scene.Geometry;
 import com.jme3.scene.Node;
 import com.jme3.scene.Spatial;
 import com.jme3.util.TempVars;
+import com.jme3.util.clone.Cloner;
+
 import java.io.IOException;
 
 /**
@@ -100,7 +102,8 @@ public class PointLightShadowRenderer extends AbstractShadowRenderer {
     protected void updateShadowCams(Camera viewCam) {
 
         if (light == null) {
-            throw new IllegalStateException("The light can't be null for a " + this.getClass().getName());
+            logger.warning("The light can't be null for a " + getClass().getName());
+            return;
         }
 
         //bottom
@@ -171,7 +174,7 @@ public class PointLightShadowRenderer extends AbstractShadowRenderer {
 
     @Override
     protected void setMaterialParameters(Material material) {
-        material.setVector3("LightPos", light.getPosition());
+        material.setVector3("LightPos", light == null ? new Vector3f() : light.getPosition());
     }
 
     @Override
@@ -197,10 +200,18 @@ public class PointLightShadowRenderer extends AbstractShadowRenderer {
         this.light = light;
     }
 
+    @Override
+    public void cloneFields(final Cloner cloner, final Object original) {
+        light = cloner.clone(light);
+        init((int) shadowMapSize);
+        frustums = null;
+        super.cloneFields(cloner, original);
+    }
+
     @Override
     public void read(JmeImporter im) throws IOException {
         super.read(im);
-        InputCapsule ic = (InputCapsule) im.getCapsule(this);
+        InputCapsule ic = im.getCapsule(this);
         light = (PointLight) ic.readSavable("light", null);
         init((int) shadowMapSize);
     }
@@ -208,7 +219,7 @@ public class PointLightShadowRenderer extends AbstractShadowRenderer {
     @Override
     public void write(JmeExporter ex) throws IOException {
         super.write(ex);
-        OutputCapsule oc = (OutputCapsule) ex.getCapsule(this);
+        OutputCapsule oc = ex.getCapsule(this);
         oc.write(light, "light", null);
     }
     
@@ -218,7 +229,12 @@ public class PointLightShadowRenderer extends AbstractShadowRenderer {
      * @return 
      */
     @Override
-    protected boolean checkCulling(Camera viewCam) {      
+    protected boolean checkCulling(Camera viewCam) {
+
+        if (light == null) {
+            return false;
+        }
+
         Camera cam = viewCam;
         if(frustumCam != null){
             cam = frustumCam;            
diff --git a/jme3-core/src/main/java/com/jme3/shadow/SpotLightShadowRenderer.java b/jme3-core/src/main/java/com/jme3/shadow/SpotLightShadowRenderer.java
index b291e722e..e1d7db05e 100644
--- a/jme3-core/src/main/java/com/jme3/shadow/SpotLightShadowRenderer.java
+++ b/jme3-core/src/main/java/com/jme3/shadow/SpotLightShadowRenderer.java
@@ -47,6 +47,8 @@ import com.jme3.renderer.queue.RenderQueue;
 import com.jme3.scene.Node;
 import com.jme3.scene.Spatial;
 import com.jme3.util.TempVars;
+import com.jme3.util.clone.Cloner;
+
 import java.io.IOException;
 
 /**
@@ -123,6 +125,11 @@ public class SpotLightShadowRenderer extends AbstractShadowRenderer {
     @Override
     protected void updateShadowCams(Camera viewCam) {
 
+        if (light == null) {
+            logger.warning("The light can't be null for a " + getClass().getName());
+            return;
+        }
+
         float zFar = zFarOverride;
         if (zFar == 0) {
             zFar = viewCam.getFrustumFar();
@@ -139,7 +146,6 @@ public class SpotLightShadowRenderer extends AbstractShadowRenderer {
 
         shadowCam.update();
         shadowCam.updateViewProjection();
-
     }
 
     @Override
@@ -186,11 +192,17 @@ public class SpotLightShadowRenderer extends AbstractShadowRenderer {
         material.clearParam("LightDir");
     }
 
-    
+    @Override
+    public void cloneFields(final Cloner cloner, final Object original) {
+        light = cloner.clone(light);
+        init((int) shadowMapSize);
+        super.cloneFields(cloner, original);
+    }
+
     @Override
     public void read(JmeImporter im) throws IOException {
         super.read(im);
-        InputCapsule ic = (InputCapsule) im.getCapsule(this);
+        InputCapsule ic = im.getCapsule(this);
         zFarOverride = ic.readInt("zFarOverride", 0);
         light = (SpotLight) ic.readSavable("light", null);
         fadeInfo = (Vector2f) ic.readSavable("fadeInfo", null);
@@ -202,7 +214,7 @@ public class SpotLightShadowRenderer extends AbstractShadowRenderer {
     @Override
     public void write(JmeExporter ex) throws IOException {
         super.write(ex);
-        OutputCapsule oc = (OutputCapsule) ex.getCapsule(this);        
+        OutputCapsule oc = ex.getCapsule(this);
         oc.write(zFarOverride, "zFarOverride", 0);
         oc.write(light, "light", null);
         oc.write(fadeInfo, "fadeInfo", null);