diff --git a/lib/controllers/macbg.py b/lib/controllers/macbg.py
new file mode 100644
index 00000000..e4e4f9fb
--- /dev/null
+++ b/lib/controllers/macbg.py
@@ -0,0 +1,10 @@
+import subprocess
+
+SCRIPT = """/usr/bin/osascript<<END
+tell application "Finder"
+set desktop picture to POSIX file "%s"
+end tell
+END"""
+
+def set_desktop_background(filename):
+    subprocess.Popen(SCRIPT%"/Users/aravind/Pictures/_DSC0237.jpg", shell=True)
\ No newline at end of file
diff --git a/lib/interpret_and_optimize/entities/layouts/stack.dart b/lib/interpret_and_optimize/entities/layouts/stack.dart
index 2bac7c48..8bcc1bcc 100644
--- a/lib/interpret_and_optimize/entities/layouts/stack.dart
+++ b/lib/interpret_and_optimize/entities/layouts/stack.dart
@@ -84,7 +84,7 @@ class PBIntermediateStackLayout extends PBLayoutIntermediateNode {
       List<PBIntermediateNode> children, PBContext currentContext) {
     /// The width of this stack must be the full width of the Scaffold or Artboard. As discussed, at some point we can change this but for now, this makes the most sense.
     var stack =
-        PBIntermediateStackLayout(Uuid().v4(), currentContext: currentContext);
+        PBIntermediateStackLayout(UUID: Uuid().v4(), currentContext: currentContext);
     stack.prototypeNode = prototypeNode;
     children.forEach((child) => stack.addChild(child));
     return stack;
diff --git a/pb-scripts/install.sh b/pb-scripts/install.sh
index d268cd97..b36f8e68 100755
--- a/pb-scripts/install.sh
+++ b/pb-scripts/install.sh
@@ -31,7 +31,7 @@ stop_spin(){
 }
 
 
-start_spin "Installing Para-beac core and its dependencies"
+start_spin "Installing Parabeac-core and its dependencies"
 tput civis # stop mouse pointer from blinking
 cd ../SketchAssetConverter && npm i
 pub get