diff --git a/ege/CollisionShapeCreator.cpp b/ege/CollisionShapeCreator.cpp
index d2174cd..0521eb4 100644
--- a/ege/CollisionShapeCreator.cpp
+++ b/ege/CollisionShapeCreator.cpp
@@ -24,13 +24,13 @@
 
 btCollisionShape* ege::collision::createShape(const ememory::SharedPtr<ege::resource::Mesh>& _mesh) {
 	if (_mesh == nullptr) {
-		EGE_DEBUG("Create empty shape (no mesh)");
+		EGE_ERROR("Create empty shape (no mesh)");
 		return new btEmptyShape();;
 	}
 	const std::vector<ememory::SharedPtr<ege::PhysicsShape>>& physiqueProperty = _mesh->getPhysicalProperties();
 	if (physiqueProperty.size() == 0) {
-		EGE_DEBUG("Create empty shape (no default shape)");
-		return new btEmptyShape();;
+		EGE_ERROR("Create empty shape (no default shape)");
+		return new btEmptyShape();
 	}
 	int32_t count = 0;
 	for (size_t iii=0; iii<physiqueProperty.size(); iii++) {
@@ -41,10 +41,11 @@ btCollisionShape* ege::collision::createShape(const ememory::SharedPtr<ege::reso
 	}
 	btCompoundShape* outputShape = nullptr;
 	if (count>1) {
-		EGE_DEBUG("Create complexe shape");
+		EGE_ERROR("Create complexe shape");
 		outputShape = new btCompoundShape();
 	} else {
-		EGE_DEBUG("Create simple shape");
+		EGE_ERROR("Create simple shape");
+		//outputShape = new btCompoundShape();
 	}
 	for (size_t iii=0; iii<physiqueProperty.size(); iii++) {
 		if (physiqueProperty[iii] == nullptr) {
@@ -52,10 +53,10 @@ btCollisionShape* ege::collision::createShape(const ememory::SharedPtr<ege::reso
 		}
 		switch (physiqueProperty[iii]->getType()) {
 			case ege::PhysicsShape::box : {
-				EGE_DEBUG("    Box");
+				EGE_ERROR("    Box");
 				const ege::PhysicsBox* tmpElement = physiqueProperty[iii]->toBox();
 				if (tmpElement == nullptr) {
-					// ERROR ...
+					EGE_ERROR("    Box ==> can not cast in BOX");
 					continue;
 				}
 				btCollisionShape* tmpShape = new btBoxShape(tmpElement->getSize());
@@ -76,7 +77,7 @@ btCollisionShape* ege::collision::createShape(const ememory::SharedPtr<ege::reso
 				EGE_DEBUG("    Cylinder");
 				const ege::PhysicsCylinder* tmpElement = physiqueProperty[iii]->toCylinder();
 				if (tmpElement == nullptr) {
-					// ERROR ...
+					EGE_ERROR("    Cylinder ==> can not cast in Cylinder");
 					continue;
 				}
 				btCollisionShape* tmpShape = new btCylinderShape(tmpElement->getSize());
@@ -95,7 +96,7 @@ btCollisionShape* ege::collision::createShape(const ememory::SharedPtr<ege::reso
 				EGE_DEBUG("    Capsule");
 				const ege::PhysicsCapsule* tmpElement = physiqueProperty[iii]->toCapsule();
 				if (tmpElement == nullptr) {
-					// ERROR ...
+					EGE_ERROR("    Capsule ==> can not cast in Capsule");
 					continue;
 				}
 				btCollisionShape* tmpShape = new btCapsuleShape(tmpElement->getRadius(), tmpElement->getHeight());
@@ -114,7 +115,7 @@ btCollisionShape* ege::collision::createShape(const ememory::SharedPtr<ege::reso
 				EGE_DEBUG("    Cone");
 				const ege::PhysicsCone* tmpElement = physiqueProperty[iii]->toCone();
 				if (tmpElement == nullptr) {
-					// ERROR ...
+					EGE_ERROR("    Cone ==> can not cast in Cone");
 					continue;
 				}
 				btCollisionShape* tmpShape = new btConeShape(tmpElement->getRadius(), tmpElement->getHeight());
@@ -133,7 +134,7 @@ btCollisionShape* ege::collision::createShape(const ememory::SharedPtr<ege::reso
 				EGE_DEBUG("    Sphere");
 				const ege::PhysicsSphere* tmpElement = physiqueProperty[iii]->toSphere();
 				if (tmpElement == nullptr) {
-					// ERROR ...
+					EGE_ERROR("    Sphere ==> can not cast in Sphere");
 					continue;
 				}
 				btCollisionShape* tmpShape = new btSphereShape(tmpElement->getRadius());
@@ -152,7 +153,7 @@ btCollisionShape* ege::collision::createShape(const ememory::SharedPtr<ege::reso
 				EGE_DEBUG("    convexHull");
 				const ege::PhysicsConvexHull* tmpElement = physiqueProperty[iii]->toConvexHull();
 				if (tmpElement == nullptr) {
-					// ERROR ...
+					EGE_ERROR("    convexHull ==> can not cast in convexHull");
 					continue;
 				}
 				btConvexHullShape* tmpShape = new btConvexHullShape(&(tmpElement->getPointList()[0].x()), tmpElement->getPointList().size());
diff --git a/ege/elements/ElementPhysic.cpp b/ege/elements/ElementPhysic.cpp
index d371e06..928cf7e 100644
--- a/ege/elements/ElementPhysic.cpp
+++ b/ege/elements/ElementPhysic.cpp
@@ -60,9 +60,11 @@ void ege::ElementPhysic::createRigidBody(float _mass) {
 	startTransform.setIdentity();
 	vec3 localInertia(0,0,0);
 	//rigidbody is dynamic if and only if mass is non zero, otherwise static
-	if (_mass != 0.0f && getShape()!=nullptr) {
+	if (    _mass != 0.0f
+	     && getShape()!=nullptr) {
 		getShape()->calculateLocalInertia(_mass, localInertia);
 	}
+	EGE_ERROR("Create The RIGID body ...");
 	//using motionstate is recommended, it provides interpolation capabilities, and only synchronizes 'active' objects
 	btDefaultMotionState* motionState = new btDefaultMotionState(startTransform);
 	btRigidBody::btRigidBodyConstructionInfo rbInfo(_mass, motionState, getShape(), localInertia);
@@ -355,12 +357,15 @@ void ege::ElementPhysic::draw(int32_t _pass) {
 		if(    m_body != nullptr
 		    && m_mesh != nullptr
 		    && m_body->getMotionState() ) {
-			//EGE_INFO("element pos = " << getPosition());
+			EGE_INFO("element pos = " << getPosition());
 			btScalar mmm[16];
 			btDefaultMotionState* myMotionState = (btDefaultMotionState*)m_body->getMotionState();
 			myMotionState->m_graphicsWorldTrans.getOpenGLMatrix(mmm);
 			
-			mat4 transformationMatrix(mmm);
+			
+			EGE_INFO("    mat = " << mat4(mmm));
+			//mat4 transformationMatrix(mmm);
+			mat4 transformationMatrix = mat4(mmm) * etk::matScale(vec3(20,20,20));
 			transformationMatrix.transpose();
 			m_mesh->draw(transformationMatrix);
 		}
diff --git a/sample/LowPoly/appl/Windows.hpp b/sample/LowPoly/appl/Windows.hpp
index e76a23e..c105b4b 100644
--- a/sample/LowPoly/appl/Windows.hpp
+++ b/sample/LowPoly/appl/Windows.hpp
@@ -18,7 +18,7 @@ namespace appl {
 			ememory::SharedPtr<ege::camera::View> m_camera;
 		protected:
 			Windows();
-			void init();
+			void init() override;
 		public:
 			DECLARE_FACTORY(Windows);
 			virtual ~Windows() { };