diff --git a/src/main.js b/src/main.js
index ba3e38c..ef475c0 100644
--- a/src/main.js
+++ b/src/main.js
@@ -93,7 +93,7 @@ function forwardConsole(fnName, dest) {
     const stackLines = error.stack.split("\n");
 
     let message = args.join(" ");  // Join all arguments into a single string
-    const location = stackLines[1].match(/([a-zA-Z0-9_-]+\.js:\d+)/);
+    const location = stackLines.length>1 ? stackLines[1].match(/([a-zA-Z0-9_-]+\.js:\d+)/) : stackLines.toString();
 
     if (fnName === "error") {
       // Send the full stack trace for errors
@@ -1322,12 +1322,14 @@ let actions = {
       for (let frameObj of action.selectedFrames) {
         let layer = object.layers[frameObj.layer];
         let frame = layer.frames[frameObj.frameNum];
-        frameBuffer.push({
-          frame: frame,
-          frameNum: frameObj.frameNum,
-          layer: frameObj.layer,
-        });
-        layer.deleteFrame(frame.idx, undefined, frameObj.replacementUuid);
+        if (frameObj) {
+          frameBuffer.push({
+            frame: frame,
+            frameNum: frameObj.frameNum,
+            layer: frameObj.layer,
+          });
+          layer.deleteFrame(frame.idx, undefined, frameObj.replacementUuid);
+        }
       }
       for (let frameObj of frameBuffer) {
         const layer_idx = frameObj.layer + action.offset.layers;
@@ -1443,6 +1445,7 @@ let actions = {
       let serializableShapes = [];
       let serializableObjects = [];
       let bbox;
+      const frame = context.activeObject.currentFrame
       for (let shape of context.shapeselection) {
         serializableShapes.push(shape.idx);
         if (bbox == undefined) {
@@ -1452,12 +1455,14 @@ let actions = {
         }
       }
       for (let object of context.selection) {
-        serializableObjects.push(object.idx);
-        // TODO: rotated bbox
-        if (bbox == undefined) {
-          bbox = object.bbox();
-        } else {
-          growBoundingBox(bbox, object.bbox());
+        if (object.idx in frame.keys) {
+          serializableObjects.push(object.idx);
+          // TODO: rotated bbox
+          if (bbox == undefined) {
+            bbox = object.bbox();
+          } else {
+            growBoundingBox(bbox, object.bbox());
+          }
         }
       }
       context.shapeselection = [];
@@ -1467,7 +1472,7 @@ let actions = {
         objects: serializableObjects,
         groupUuid: uuidv4(),
         parent: context.activeObject.idx,
-        frame: context.activeObject.currentFrame.idx,
+        frame: frame.idx,
         layer: context.activeObject.activeLayer.idx,
         position: {
           x: (bbox.x.min + bbox.x.max) / 2,
@@ -2632,14 +2637,14 @@ class Layer extends Widget {
           ctx.setTransform(transform)
         }
       }
-    }
-    if (this.activeShape) {
-      this.activeShape.draw(cxt)
-    }
-    if (context.activeCurve) {
-      if (frame.shapes.indexOf(context.activeCurve.shape) != -1) {
-        cxt.selected = true
+      if (this.activeShape) {
+        this.activeShape.draw(cxt)
+      }
+      if (context.activeCurve) {
+        if (frame.shapes.indexOf(context.activeCurve.shape) != -1) {
+          cxt.selected = true
 
+        }
       }
     }
   }
@@ -4111,7 +4116,9 @@ class GraphicsObject extends Widget {
     for (let layer of this.layers) {
       layer.children = layer.children.filter(child => child.idx !== idx);
       for (let frame of layer.frames) {
-        delete frame[idx];
+        if (frame) {
+          delete frame[idx];
+        }
       }
     }
     // this.children.splice(this.children.indexOf(childObject), 1);
@@ -8368,4 +8375,4 @@ if (window.openedFiles?.length>0) {
   for (let i=1; i<window.openedFiles.length; i++) {
     newWindow(window.openedFiles[i])
   }
-}
\ No newline at end of file
+}