Scope issues:
does the patch fix any scope issues?
I think gigau has found that the superregion_name = was not working in decisions files if I remember correctly? I also think there is a problem using region_name = or province_group_name = as triggers in the common\estates files.
Maybe someone at Paradox should double check the coding for the scopes for area, province_group, region, and superregion and make sure that things like area_name, region_name etc work in effects and triggers in all the files - missions, decisions, common\estate files?