OpenScene crash

this line used to work in 5.3

UnityEditor.SceneManagement.EditorSceneManager.OpenScene (scene, UnityEditor.SceneManagement.OpenSceneMode.Additive);

but now crashes the editor in 5.6.3p3 for a 0xc000005 exception at

3244036--249460--upload_2017-10-5_13-40-42.png

please tell me there is a work around I can’t change unity version now :frowning:

Fixed, it was due to a serialization problem either on the navmesh, lightmap or occlusion data. I just deleted the data folder next to the map to fix the issue.