1 files changed, 1 insertions, 1 deletions

diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index 59a453a..cf03d7c 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -4522,7 +4522,7 @@ namespace OpenSim.Region.Framework.Scenes
             // For now, we use the NINJA naming scheme for identifying joints.
             // In the future, we can support other joint specification schemes such as a 
             // custom checkbox in the viewer GUI.
-            if (ParentGroup.Scene != null && ParentGroup.Scene.PhysicsScene.SupportsNINJAJoints)
+            if (ParentGroup.Scene != null && ParentGroup.Scene.PhysicsScene != null && ParentGroup.Scene.PhysicsScene.SupportsNINJAJoints)
             {
                 return IsHingeJoint() || IsBallJoint();
             }