Unity has released 2018.3.3f1 that resolves the issues encountered in versions 2018.3.1 and 2018.3.2. If you’re using any previous 2018.3 versions, we recommend upgrading to 2018.3.3f1 immediately. If you use 2018.3.3f1 for Oculus development you’ll need to verify that Oculus (Standalone) is installed in the Package Manager.
Updates to OVROverlay that include a GUI redesign and new features. Details about the updates and new features are detailed in VR Compositor Layers & OVROverlay.
error CS0234: The type or namespace name 'Policy' does not exist in the
namespace 'System.Security' (are you missing an assembly reference?)
AssetImporter is referencing an asset from the previous import. This
should not happen.