format fix

preprocessing.py

@@ -162,15 +162,17 @@ def __init__(self, index, name, icon, cmd_type, label=None, dataref=None, datare
             pass
         elif self.dataref_states is not None:
             if icon is None:
-                logging.error("#{} {} is trying to set dataref_states without the 'icon' parameter, quitting...")
+                logging.error("#{} {} is trying to set dataref_states without the 'icon' parameter, quitting..."
+                              .format(index, name))
                 sys.exit(1)
 
             self.file_names = np.empty(len(self.dataref_states), dtype=object)
             for i, state in enumerate(self.dataref_states):
                 self.file_names[i] = get_filename_button_dataref_png(icon, state)
         else:
             if icon is None:
-                logging.error("#{} {} is trying to set static icon without the 'icon' parameter, quitting...")
+                logging.error("#{} {} is trying to set static icon without the 'icon' parameter, quitting..."
+                              .format(index, name))
                 sys.exit(1)
 
             self.file_names = np.empty(1, dtype=object)