Hi, I have fairly mature project with a number of scenes. These can be selected from a menu scene via ui buttons. Recently the editor crashed while a scene was running. Since then one of the scenes is no longer accessible from the editor. When I open it in the editor it opens another scene. However, the scene that it points to, still exists. It will load from the menu. I presume that the scene.unity file has become corrupt but don't want to start digging around in it without knowing what I'm doing. Any help appreciated.