Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.
at Test117393.TestObject.GetInterface(Guid& iid, IntPtr& ppv) + 0xa
at System.Runtime.InteropServices.ComWrappers.ManagedObjectWrapper.QueryInterface(Guid&, IntPtr&) + 0x8e
at System.Runtime.InteropServices.ComWrappers.IUnknown_QueryInterface(IntPtr, Guid*, IntPtr*) + 0x2c