Lean87, here all is working well with CCM2.50. For upgrading the camel to a camel musketeer you don´t have enough gold. The upgrading costs 60 gold, but you only have 42 gold. For upgrading the chariot to the (fictive) mesoknight, besides the strategic resource iron (that you have inside your city) you need additionally the strategic resource horses in the city, what you are not having yet. Btw.: To let an unescorted settler march next to a border in CCM, soon can become a very dangerous adventure for that poor settler.