diff --git a/OpenSim/Region/Framework/Scenes/UuidGatherer.cs b/OpenSim/Region/Framework/Scenes/UuidGatherer.cs
index 4e5fb8e683..8f69ce3ab6 100644
--- a/OpenSim/Region/Framework/Scenes/UuidGatherer.cs
+++ b/OpenSim/Region/Framework/Scenes/UuidGatherer.cs
@@ -232,6 +232,10 @@ namespace OpenSim.Region.Framework.Scenes
                 if (part.DynAttrs.ContainsStore("OpenSim", "Materials"))
                 {
                     OSDMap materialsStore = part.DynAttrs.GetStore("OpenSim", "Materials");
+
+                    if (materialsStore == null)
+                        return;
+
                     materialsStore.TryGetValue("Materials", out osdMaterials);
                 }