[]unity5.3.4f1. 导出模型失败

导出模型出现报错
MissingMethodException: Method not found: 'UnityEngine.LightmapData.get_lightmapDir'.
LayaTools.DataManager.saveMesh (UnityEngine.GameObject gameObject)
LayaTools.DataManager.saveMesh (UnityEngine.GameObject gameObject)
LayaTools.DataManager.getData (Boolean selected, Boolean scene)
LayaPlugin.windowShowExportScene () (at Assets/LayaPlugin/LayaItem.cs:116)
LayaPlugin.OnGUI () (at Assets/LayaPlugin/LayaItem.cs:40)
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:232)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object parameters) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115)
UnityEditor.HostView.Invoke (System.String methodName, System.Object obj) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:187)
UnityEditor.HostView.Invoke (System.String methodName) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:180)
UnityEditor.HostView.OnGUI () (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:76)
。
是不能用unity自带的shader么