I will check what rom versions you have in your pin tomorrow. the manual i am reading states that the dipswitches select country (i.e. germany, usa, sweden and so on) but pinball repair.com says that there are no dip switch settings for the language display and they are set via the rom on the display. 
and the display says german cpu when we boot your lost world up.
your mpu does have dipswithes and from memory your other concaves have the dipswitches all set to off (as per usa settings) but this pin has some of the dipswitches on
anyway i have downloaded the latest rom versions and i will bring my uv erasor, laptop and eprom programer tomorow and we will sort it out