Since this is a ScriptableObject, we can use the "normal" != null

.IsNull() is mostly for interfaces that might be Unity Objects

Author: keveleigh

Assets/MRTK/Core/Services/MixedRealityToolkit.cs

@@ -470,7 +470,7 @@ private void InitializeServiceLocator()
             }
 
             // If the Boundary system has been selected for initialization in the Active profile, enable it in the project
-            if (ActiveProfile.IsBoundarySystemEnabled && !ActiveProfile.ExperienceSettingsProfile.IsNull())
+            if (ActiveProfile.IsBoundarySystemEnabled && ActiveProfile.ExperienceSettingsProfile != null)
             {
                 DebugUtilities.LogVerbose("Begin registration of the boundary system");
                 object[] args = { ActiveProfile.BoundaryVisualizationProfile, ActiveProfile.ExperienceSettingsProfile.TargetExperienceScale };