Ensure class_dict is not null before logging cd_path
-Ensured class_dict is not null before logging cd_path to prevent UnboundLocalError from callbacks/saveconfig.py -Configs not using "class_dict" should leave it uncommented and set to "null".
-Ensured class_dict is not null before logging cd_path to prevent UnboundLocalError from callbacks/saveconfig.py -Configs not using "class_dict" should leave it uncommented and set to "null".