2.5.1 has a crash when capturing Issa. game/captives.rpy is trying to jump to event c3_sleep, which doesnt exist. Changing this to c3_dream seems to have fixed it.
Edit: Theres another one in hordes.rpy line 954, a - where a = needs to be.
Don't know if that could help the dev, but here is the full trace:
-- Full Traceback ------------------------------------------------------------
Full traceback:
File "game/world.rpy", line 1102, in script call
call menu_return
File "game/lair.rpy", line 5218, in script call
call menu_return
File "game/lair.rpy", line 1780, in script call
call menu_return
File "game/hordes.rpy", line 1204, in script call
call menu_return
File "game/lair.rpy", line 599, in script call
call menu_return
File "game/captures.rpy", line 4782, in script call
call menu_return
File "game/captures.rpy", line 3926, in script call
call menu_return
File "game/captives.rpy", line 11157, in script call
call menu_return
File "game/captures.rpy", line 4186, in script call
call menu_return
File "game/hordes.rpy", line 1204, in script call
call menu_return
File "game/captives.rpy", line 3208, in script call
call menu_return
File "game/captives.rpy", line 861, in script call
call menu_return
File "game/captives.rpy", line 3832, in script call
call menu_return
File "game/captives.rpy", line 11157, in script call
call menu_return
File "game/captures.rpy", line 805, in script call
call menu_return
File "game/captives.rpy", line 17619, in script call
call menu_return
File "game/captives.rpy", line 13525, in script
jump c3_sleep
File "D:\Jeux\itch.io\Ravager\renpy\ast.py", line 1697, in execute
rv = renpy.game.script.lookup(target)
File "D:\Jeux\itch.io\Ravager\renpy\script.py", line 898, in lookup
raise ScriptError("could not find label '%s'." % str(original))
ScriptError: could not find label 'c3_sleep'.
Windows-8-6.2.9200
Ren'Py 7.3.5.606
Ravager 2.5.1
Tue Jun 23 23:01:24 2020