I have a few errors nailed down, and one not. In 0.11.0b:
Daisy sent for maid training causes:
SCRIPT ERROR: Invalid call. Nonexistent function 'set_combat_position' in base 'Reference (CharacterClass.gd)'.
at: make_unavaliable (res://src/character/ch_leveling.gd:362)
While I was in The Black Cavern, which was a location I had been to, left, and then came back to. I had been through two rooms I think before this happened.
SCRIPT ERROR: Invalid get index 'L32L1 12' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 13' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 14' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 17' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 18' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 19' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 22' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 23' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 24' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 12' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 13' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 14' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 17' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 18' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 19' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 22' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 23' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
SCRIPT ERROR: Invalid get index 'L32L1 24' (on base: 'Dictionary').
at: update (res://gui_modules/Exploration/Scripts/room.gd:24)
During battles with Liches:
ERROR IN AI TEMPLATE
Went into inventory after a battle and put a looted Magic Tome in a character's hand:
SCRIPT ERROR: Invalid get index 'is_stored' (on base: 'Nil').
at: eff_stack.clear_nonstored_effs (res://src/classes/eff_stack.gd:134)
And the big one, which I can't assign a reason for. At the mansion, advance time and:
SCRIPT ERROR: Invalid get index 'sid1630480949' (on base: 'Dictionary').
at: clone_stack (res://src/core/effects_pool.gd:84)
SCRIPT ERROR: Invalid get index 'sid2562762970' (on base: 'Dictionary').
at: clone_stack (res://src/core/effects_pool.gd:84)
SCRIPT ERROR: Invalid call. Nonexistent function 'get_active_effects' in base 'Nil'.
at: process_effects_expand (res://src/character/ch_dyn_stats.gd:162)
SCRIPT ERROR: Invalid call. Nonexistent function 'get_active_effects' in base 'Nil'.
at: generate_data (res://src/character/ch_dyn_stats.gd:145)
SCRIPT ERROR: Invalid call. Nonexistent function 'clear_nonstored_effs' in base 'Nil'.
at: clear_nonstored_effs (res://src/character/ch_dyn_stats.gd:108)
shows up. 47 times in a row. All at once out of the blue.
SCRIPT ERROR: Invalid call. Nonexistent function 'get_active_effects' in base 'Nil'.
at: has_status (res://src/character/ch_dyn_stats.gd:200)
showed up once between the third and fourth lines on the 27th iteration, and then four times in a row between the fourth and fifth lines on the 31st iteration, then again between the fourth and fifth lines on the 39th iteration. I hope that is clear enough to spare you and itch from me simply posting all those lines.
I have no idea what causes that. I have seen it in the mansion, I have seen it while travelling, and I have seen it while in a dungeon. I can't tie it to a specific action. I also can't tell if anything is actually broken in the user experience after it happens.
Good luck :/