JosEPh_II
TBS WarLord
No Raledon it's a building chain. You have to have the MC before you can build the MS. And who's expected behavior? Was never the modder's design who made them.I'm not entirely sure, but it appears mercenary stables is bugged, one way or another.
It requires the mercenary camp building instead of an actual tech, so in terms of production and "availability", it opens at the end of the prehistoric era.
The expected behavior is that it'll be opened at the same time as the mercenary camp, thus costing and being available at around the same time.