Error MainLoop.cpp:1432: Exception at tick 129076553: The mod Bot Death Sounds (1.0.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event BotDeathSounds::on_entity_died (ID 4)
BotDeathSounds/control.lua:16: attempt to index field 'character' (a nil value)
stack traceback:
BotDeathSounds/control.lua:16: in function <BotDeathSounds/control.lua:13>

Hmm, thanks for letting me know. Does it work with no other mods but it running? Are you running base 2.0 or experimental? Were you playing multiplayer? Did you happen to die?

Edit: Try the updated version and see if you're still getting crashes.