Alright, BTS 3.03, solver's unofficial patch dated August 25th.
This one is real simple to recreate.
1) Start civ
2) Enter the civlopedia
3) Navigate to units, Jaguar
4) Click the "swordsman" link where it says "Replaces swordsman"
5) Game will CTD
The reverse is also true
1) same
2) same
3) Navigate to units, Swordsman
4) Click "jaguar" link in "replaced by Jaguar"
5) same
This one is real simple to recreate.
1) Start civ
2) Enter the civlopedia
3) Navigate to units, Jaguar
4) Click the "swordsman" link where it says "Replaces swordsman"
5) Game will CTD
The reverse is also true
1) same
2) same
3) Navigate to units, Swordsman
4) Click "jaguar" link in "replaced by Jaguar"
5) same