diff --git a/ks_includes/printer.py b/ks_includes/printer.py
index 53adb8f0..c9750284 100644
--- a/ks_includes/printer.py
+++ b/ks_includes/printer.py
@@ -118,17 +118,19 @@ class Printer:
 
         if wh_state == "ready":
             new_state = "ready"
-            print_state = self.data['print_stats']['state'].lower()  # complete, paused, printing, standby
-            idle_state = self.data['idle_timeout']['state'].lower()  # idle, printing, ready
-            if print_state == "paused":
-                new_state = "paused"
-            elif idle_state == "printing":
-                if print_state == "complete":
-                    new_state = "ready"
-                elif print_state != "printing":  # Not printing a file, toolhead moving
-                    new_state = "busy"
-                else:
-                    new_state = "printing"
+            if self.data['print_stats']:
+                print_state = self.data['print_stats']['state'].lower()  # complete, error, paused, printing, standby
+                if print_state == "paused":
+                    new_state = "paused"
+                if self.data['idle_timeout']:
+                    idle_state = self.data['idle_timeout']['state'].lower()  # idle, printing, ready
+                    if idle_state == "printing":
+                        if print_state == "complete":
+                            new_state = "ready"
+                        elif print_state != "printing":  # Not printing a file, toolhead moving
+                            new_state = "busy"
+                        else:
+                            new_state = "printing"
 
             if new_state != "busy":
                 self.change_state(new_state)
diff --git a/panels/print.py b/panels/print.py
index df10cf57..f3145c12 100644
--- a/panels/print.py
+++ b/panels/print.py
@@ -428,3 +428,9 @@ class PrintPanel(ScreenPanel):
 
     def _refresh_files(self, widget):
         self._files.refresh_files()
+
+    def process_update(self, action, data):
+        if action == "notify_gcode_response":
+            if "unknown" in data.lower():
+                self._screen.show_popup_message("%s" % data)
+        return