diff --git a/include/osgAnimation/RigTransform b/include/osgAnimation/RigTransform
index 546957b97..750adad00 100644
--- a/include/osgAnimation/RigTransform
+++ b/include/osgAnimation/RigTransform
@@ -1,4 +1,4 @@
-/*  -*-c++-*-
+ /*  -*-c++-*-
  *  Copyright (C) 2009 Cedric Pinson <cedric.pinson@plopbyte.net>
  *
  * This library is open source and may be redistributed and/or modified under
@@ -26,9 +26,15 @@ namespace osgAnimation
     {
     public:
         RigTransform() {}
-        virtual ~RigTransform() {}
+        RigTransform(const RigTransform&, const osg::CopyOp&) {}
+
+        META_Object(osgAnimation,RigTransform)
+
         virtual void operator()(RigGeometry&) {}
 
+    protected:
+        virtual ~RigTransform() {}
+
     };
 
 }
diff --git a/include/osgAnimation/RigTransformHardware b/include/osgAnimation/RigTransformHardware
index af983df23..04533d74b 100644
--- a/include/osgAnimation/RigTransformHardware
+++ b/include/osgAnimation/RigTransformHardware
@@ -32,7 +32,8 @@ namespace osgAnimation
     public:
 
         RigTransformHardware();
-        RigTransformHardware(const RigTransformHardware&,const osg::CopyOp&){};
+
+        RigTransformHardware(const RigTransformHardware& rth, const osg::CopyOp& copyop);
 
         META_Object(osgAnimation,RigTransformHardware)
 
diff --git a/src/osgAnimation/RigTransformHardware.cpp b/src/osgAnimation/RigTransformHardware.cpp
index 03c292fed..86f08ed35 100644
--- a/src/osgAnimation/RigTransformHardware.cpp
+++ b/src/osgAnimation/RigTransformHardware.cpp
@@ -27,6 +27,20 @@ RigTransformHardware::RigTransformHardware()
     _nbVertexes = 0;
 }
 
+RigTransformHardware::RigTransformHardware(const RigTransformHardware& rth, const osg::CopyOp& copyop):
+    RigTransform(rth, copyop),
+    _bonesPerVertex(rth._bonesPerVertex),
+    _nbVertexes(rth._nbVertexes),
+    _vertexIndexMatrixWeightList(rth._vertexIndexMatrixWeightList),
+    _bonePalette(rth._bonePalette),
+    _boneNameToPalette(rth._boneNameToPalette),
+    _boneWeightAttribArrays(rth._boneWeightAttribArrays),
+    _uniformMatrixPalette(rth._uniformMatrixPalette),
+    _shader(rth._shader),
+    _needInit(false)
+{
+}
+
 osg::Vec4Array* RigTransformHardware::getVertexAttrib(int index)
 {
     if (index >= (int)_boneWeightAttribArrays.size())