diff --git a/setup.py b/setup.py
index a0910e5..49a0264 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="schulich-ignite",
-    version="0.0.9",
+    version="0.0.10",
     author="Schulich Ignite",
     author_email="info@shulichignite.com",
     description="Spark library for Shulich Ignite sessions",
@@ -16,6 +16,7 @@
     classifiers=[
         "Programming Language :: Python :: 3",
         "License :: OSI Approved :: MIT License",
+        "Framework :: IPython",
         "Operating System :: OS Independent",
     ],
     python_requires='>=3.8',
diff --git a/spark/core.py b/spark/core.py
index fbae40e..fd31a6a 100644
--- a/spark/core.py
+++ b/spark/core.py
@@ -23,7 +23,7 @@
 
 _sparkplug_active_thread_id = None
 _sparkplug_last_activity = 0
-_sparkplug_running = True
+_sparkplug_running = False
 
 
 class Core:
@@ -60,6 +60,7 @@ def __init__(self, globals_dict):
         self.stop_button.on_click(self.on_stop_button_clicked)
 
         self.canvas = Canvas()
+        self.output_text = ""
         self.width, self.height = DEFAULT_CANVAS_SIZE
         self.mouse_x = 0
         self.mouse_y = 0
@@ -130,7 +131,6 @@ def start(self, methods):
 
         display(self.canvas)
         
-        self.output_text = ""
         self.output_text_code = display(Code(self.output_text), display_id=True)
 
         self.canvas.on_mouse_down(self.on_mouse_down)
@@ -195,8 +195,11 @@ def print_status(self, msg):
     
     # Prints output to embedded output box
     def print(self, msg):
+        global _sparkplug_running
         self.output_text += msg + "\n"
-        self.output_text_code.update(Code(self.output_text))
+
+        if _sparkplug_running:
+            self.output_text_code.update(Code(self.output_text))
 
     # Update mouse_x, mouse_y, and call mouse_down handler
     def on_mouse_down(self, x, y):