The objskin.xml file does not contain any settings. Nothing can be changed there. There are only actions and methods supporting all the plugin processes.
The settings are in the main_settings.xml file, which is unencrypted. Actions from objskin.xml use the settings saved in the file main_settings.xml and tour.xml. In addition, you can change values directly in the tour.xml file, which is generated directly from the krpanotools droplet.
Piotr