diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraint.cs b/OpenSim/Region/Physics/BulletSPlugin/BSConstraint.cs
index 07f5a21ba2..ea3093a96b 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSConstraint.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSConstraint.cs
@@ -86,7 +86,7 @@ public class BSConstraint : IDisposable
 
     public bool SetCFMAndERP(float cfm, float erp)
     {
-        bool ret = false;
+        bool ret = true;
         BulletSimAPI.SetConstraintParam2(m_constraint.Ptr, ConstraintParams.BT_CONSTRAINT_STOP_CFM, cfm, ConstraintParamAxis.AXIS_ALL);
         BulletSimAPI.SetConstraintParam2(m_constraint.Ptr, ConstraintParams.BT_CONSTRAINT_STOP_ERP, erp, ConstraintParamAxis.AXIS_ALL);
         BulletSimAPI.SetConstraintParam2(m_constraint.Ptr, ConstraintParams.BT_CONSTRAINT_CFM, cfm, ConstraintParamAxis.AXIS_ALL);
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
index 50d11e68e4..a4ab702f60 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
@@ -187,6 +187,7 @@ public sealed class BSPrim : PhysicsActor
             {
                 _mass = CalculateMass();   // changing size changes the mass
                 BulletSimAPI.SetObjectScaleMass(_scene.WorldID, _localID, _scale, (IsPhysical ? _mass : 0f), IsPhysical);
+                DetailLog("{0}: setSize: size={1}, mass={2}, physical={3}", LocalID, _size, _mass, IsPhysical);
                 RecreateGeomAndObject();
             });
         } 
@@ -972,7 +973,7 @@ public sealed class BSPrim : PhysicsActor
                 if (_size.X == _size.Y && _size.Y == _size.Z && _size.X == _size.Z)
                 {
                     // m_log.DebugFormat("{0}: CreateGeom: Defaulting to sphere of size {1}", LogHeader, _size);
-                    if (_shapeType != ShapeData.PhysicsShapeType.SHAPE_SPHERE)
+                    if (forceRebuild || (_shapeType != ShapeData.PhysicsShapeType.SHAPE_SPHERE))
                     {
                         DetailLog("{0},CreateGeom,sphere", LocalID);
                         _shapeType = ShapeData.PhysicsShapeType.SHAPE_SPHERE;
@@ -986,7 +987,7 @@ public sealed class BSPrim : PhysicsActor
             else
             {
                 // m_log.DebugFormat("{0}: CreateGeom: Defaulting to box. lid={1}, type={2}, size={3}", LogHeader, LocalID, _shapeType, _size);
-                if (_shapeType != ShapeData.PhysicsShapeType.SHAPE_BOX)
+                if (forceRebuild || (_shapeType != ShapeData.PhysicsShapeType.SHAPE_BOX))
                 {
                     DetailLog("{0},CreateGeom,box", LocalID);
                     _shapeType = ShapeData.PhysicsShapeType.SHAPE_BOX;
@@ -1201,7 +1202,8 @@ public sealed class BSPrim : PhysicsActor
 
     // Create an object in Bullet if it has not already been created
     // No locking here because this is done when the physics engine is not simulating
-    private void CreateObject()
+    // Returns 'true' if an object was actually created.
+    private bool CreateObject()
     {
         // this routine is called when objects are rebuilt. 
 
@@ -1209,10 +1211,12 @@ public sealed class BSPrim : PhysicsActor
         ShapeData shape;
         FillShapeInfo(out shape);
         // m_log.DebugFormat("{0}: CreateObject: lID={1}, shape={2}", LogHeader, _localID, shape.Type);
-        BulletSimAPI.CreateObject(_scene.WorldID, shape);
+        bool ret = BulletSimAPI.CreateObject(_scene.WorldID, shape);
 
         // the CreateObject() may have recreated the rigid body. Make sure we have the latest.
         m_body.Ptr = BulletSimAPI.GetBodyHandle2(_scene.World.Ptr, LocalID);
+
+        return ret;
     }
 
     // Copy prim's info into the BulletSim shape description structure
@@ -1327,7 +1331,6 @@ public sealed class BSPrim : PhysicsActor
 
             base.RequestPhysicsterseUpdate();
         }
-            /*
         else
         {
             // For debugging, we can also report the movement of children
@@ -1335,7 +1338,6 @@ public sealed class BSPrim : PhysicsActor
                     LocalID, entprop.Position, entprop.Rotation, entprop.Velocity, 
                     entprop.Acceleration, entprop.RotationalVelocity);
         }
-             */
     }
 
     // I've collided with something
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs b/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs
index fe705ccf21..0ffbc94040 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs
@@ -87,12 +87,12 @@ public struct ShapeData
     public System.UInt64 MeshKey;
     public float Friction;
     public float Restitution;
-    public int Collidable;
-    public int Static;  // true if a static object. Otherwise gravity, etc.
+    public float Collidable;    // true of things bump into this
+    public float Static;        // true if a static object. Otherwise gravity, etc.
 
-    // note that bools are passed as ints since bool size changes by language and architecture
-    public const int numericTrue = 1;
-    public const int numericFalse = 0;
+    // note that bools are passed as floats since bool size changes by language and architecture
+    public const float numericTrue = 1f;
+    public const float numericFalse = 0f;
 }
 [StructLayout(LayoutKind.Sequential)]
 public struct SweepHit 
diff --git a/bin/lib32/BulletSim.dll b/bin/lib32/BulletSim.dll
index 06a3cf1b0a..fd8f39ab7c 100755
Binary files a/bin/lib32/BulletSim.dll and b/bin/lib32/BulletSim.dll differ
diff --git a/bin/lib32/libBulletSim.so b/bin/lib32/libBulletSim.so
index ce187b0dbf..72847e7c6e 100755
Binary files a/bin/lib32/libBulletSim.so and b/bin/lib32/libBulletSim.so differ
diff --git a/bin/lib64/BulletSim.dll b/bin/lib64/BulletSim.dll
index f51c978349..300e4be8eb 100755
Binary files a/bin/lib64/BulletSim.dll and b/bin/lib64/BulletSim.dll differ
diff --git a/bin/lib64/libBulletSim.so b/bin/lib64/libBulletSim.so
index 2476865e56..1acc0dd5ae 100755
Binary files a/bin/lib64/libBulletSim.so and b/bin/lib64/libBulletSim.so differ