diff --git a/render-process/Editor/index.tsx b/render-process/Editor/index.tsx
index 7ab6789..fd32f86 100644
--- a/render-process/Editor/index.tsx
+++ b/render-process/Editor/index.tsx
@@ -366,6 +366,7 @@ export default class Editor extends React.Component<EditorProps, EditorState> {
             if (!str || str == "") {
                 return;
             }
+            this.onSelectNode(null);
             const data = JSON.parse(str);
             if (!curNodeData.children) {
                 curNodeData.children = [];
diff --git a/render-process/TreeTabs.tsx b/render-process/TreeTabs.tsx
index 066f2a0..44d9517 100644
--- a/render-process/TreeTabs.tsx
+++ b/render-process/TreeTabs.tsx
@@ -68,7 +68,9 @@ export default class TreeTabs extends Component<TreeTabsProps, TreeTabsState> {
         const trees: BehaviorTreeModel[] = []
         for (let k in this.editors) {
             let editor = this.editors[k];
-            trees.push(editor.save());
+            if(editor) {
+                trees.push(editor.save());
+            }
         }
         return trees;
     }
@@ -107,6 +109,7 @@ export default class TreeTabs extends Component<TreeTabsProps, TreeTabsState> {
         if (!curPath) {
             return <div />;
         }
+        this.editors = {};
         return (
             <Tabs
                 hideAdd