BugFix: Cam operation presets not working due to missing comma

scripts/addons/cam/__init__.py

@@ -671,7 +671,7 @@ class AddPresetCamOperation(bl_operators.presets.AddPresetBase, Operator):
 				d.append(prop)
 	'''
 	preset_values = ['o.use_layers', 'o.duration', 'o.chipload', 'o.material_from_model', 'o.stay_low', 'o.carve_depth', 'o.dist_along_paths', 'o.source_image_crop_end_x', 'o.source_image_crop_end_y', 'o.material_size', 'o.material_radius_around_model', 'o.use_limit_curve', 'o.cut_type', 'o.use_exact','o.exact_subdivide_edges', 'o.minz_from_ob', 'o.free_movement_height', 'o.source_image_crop_start_x', 'o.movement_insideout', 'o.spindle_rotation_direction', 'o.skin', 'o.source_image_crop_start_y', 'o.movement_type', 'o.source_image_crop', 'o.limit_curve', 'o.spindle_rpm', 'o.ambient_behaviour', 'o.cutter_type', 'o.source_image_scale_z', 'o.cutter_diameter', 'o.source_image_size_x', 'o.curve_object', 'o.curve_object1', 'o.cutter_flutes', 'o.ambient_radius', 'o.simulation_detail', 'o.update_offsetimage_tag', 'o.dist_between_paths', 'o.max', 'o.min', 'o.pixsize', 'o.slice_detail', 'o.parallel_step_back', 'o.drill_type', 'o.source_image_name', 'o.dont_merge', 'o.update_silhouete_tag', 'o.material_origin', 'o.inverse', 'o.waterline_fill', 'o.source_image_offset', 'o.circle_detail', 'o.strategy', 'o.update_zbufferimage_tag', 'o.stepdown', 'o.feedrate', 'o.cutter_tip_angle', 'o.cutter_id', 'o.path_object_name', 'o.pencil_threshold', 'o.geometry_source', 'o.optimize_threshold', 'o.protect_vertical', 'o.plunge_feedrate', 'o.minz', 'o.warnings', 'o.object_name', 'o.optimize', 'o.parallel_angle', 'o.cutter_length',
-	'o.output_header', 'o.gcode_header''o.output_trailer', 'o.gcode_trailer']
+	'o.output_header', 'o.gcode_header', 'o.output_trailer', 'o.gcode_trailer']
 
 	preset_subdir = "cam_operations"