Tear down editors and unsubscribe from buffers on window unload to prevent exceptions when typing after reload

src/app/root-view.coffee

@@ -52,7 +52,7 @@ class RootView extends View
     panesViewState: @serializePanes()
 
   serializePanes: () ->
-    @panes.children().view().serialize()
+    @panes.children().view()?.serialize()
 
   deserializePanes: (panesViewState) ->
     @panes.append @deserializeView(panesViewState)
@@ -122,3 +122,7 @@ class RootView extends View
           selected: (relativePath) => @open(relativePath)
         @append @fileFinder
         @fileFinder.editor.focus()
+
+  remove: ->
+    editor.remove() for editor in @editors()
+    super

src/app/window.coffee

@@ -24,11 +24,14 @@ windowAdditions =
     @attachRootView(path)
     @loadUserConfiguration()
     $(window).on 'close', => @close()
-    $(window).on 'beforeunload', => @saveRootViewState()
+    $(window).on 'beforeunload', =>
+      @shutdown()
+      false
     $(window).focus()
     atom.windowOpened this
 
   shutdown: ->
+    @saveRootViewState()
     @rootView.remove()
     $(window).unbind('focus')
     $(window).unbind('blur')
@@ -38,6 +41,7 @@ windowAdditions =
   attachRootView: (pathToOpen) ->
     rootViewState = atom.rootViewStates[$windowNumber]
     @rootView = if rootViewState
+      console.log "RootView deserialize", rootViewState
       RootView.deserialize(rootViewState)
     else
       new RootView {pathToOpen}