fix crash while loading. The XML Serializer need some fields public => this is really silly
fix crash while loading. The XML Serializer need some fields public => this is really silly

vr3d/OpenRTS,shaunstanislaus/OpenRTS,goofwear/OpenRTS,tempbottle/OpenRTS,bzero/OpenRTS,sangohan/OpenRTS-1,braco/OpenRTS,bradparks/OpenRTS_3d_tank_game_inn_java8,tareq-s/OpenRTS,chrisrijos/OpenRTS,pelotom/OpenRTS,bestwpw/OpenRTS,methusalah/OpenRTS,JeryBeary/OpenRTS