diff --git a/plugins/PostProcessingPlugin/PostProcessingPlugin.py b/plugins/PostProcessingPlugin/PostProcessingPlugin.py
index 657e5c5387..2c6fc3f492 100644
--- a/plugins/PostProcessingPlugin/PostProcessingPlugin.py
+++ b/plugins/PostProcessingPlugin/PostProcessingPlugin.py
@@ -54,6 +54,9 @@ class PostProcessingPlugin(QObject, Extension):
     ##  Execute all post-processing scripts on the gcode.
     def execute(self, output_device):
         scene = Application.getInstance().getController().getScene()
+        # If the scene does not have a gcode, do nothing
+        if not hasattr(scene, "gcode_dict"):
+            return
         gcode_dict = getattr(scene, "gcode_dict")
         if not gcode_dict:
             return