Don't check last tool switch height if no tool changes

- would crash when no tool changes
spegelius · Sep 27, 2017 · 9bb0ff9 · 9bb0ff9
1 parent c3a299c
commit 9bb0ff9
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/gcode_file.py b/gcode_file.py
@@ -97,7 +97,8 @@ def parse_print_settings(self):
         if not self.layers[0].start_gcode_end:
             raise ValueError("Cannot find 'START SCRIPT END'-comment. Please add it to your Slicer's config")
 
-        self.last_switch_height = max(self.last_switch_heights.items())[1]
+        if self.last_switch_heights:
+            self.last_switch_height = max(self.last_switch_heights.items())[1]
 
     def open_file(self, gcode_file):
         """ Read given g-code file into list """