Game-crashing bug located. Traceback has been sent through the in-game tools. Since I am confident that this spoils nothing, this will be in plain text:
I'm sorry, but an uncaught exception occurred.
While running game code:
File "renpy/common/000statements.rpy", line 462, in execute_pause
renpy.pause()
File "game/core.rpy", line 2724, in social_randbutt
File "game/core.rpy", line 3442, in dossier_random_cands
NameError: name 'oberod_music_lesson' is not defined
Context: on Tharkas I's social choice selector, pressing "random" may sometimes attempt to activate something unexpected. This appears to be a music lesson from Oberod. This would make more sense except that:1) Oberod was voting for someone else at the time.
2) Music lessons are not a known Oberod speciality (that's a different character's department).
3) Characters don't generally offer any lessons without a motive.