What are the default permission nodes for your plugin? I'm having trouble finding the configuration file, but I blame that on a mashup of mods and plugins on my server. If you could point me to it, that would be great also. I know the permission nodes are configurable, as noted in your original post, but your post does not inform us of what the default node values are.
I can't find "Staff."anything in my PermissionsEx autocomplete.
Any insight is greatly appreciated.