[Crash Lua Errors]Teleporting from floor 13 to 12

[legends of grimlock]

After killing the undying one and trying to figure out what to do next i went back to floor 13 and used the teleporter to floor 12 and the game crashes with a bunch of lua errors.

assets/dungeons/grimrock/level13.lua:0: attempt to index a nil value
stack traceback:
assets/dungeons/grimrock/level13.lua: in main chunk
[string "TriggerEvents.lua"]: in function 'fire'
[string "PressurePlate.lua"]: in function 'released'
[string "PressurePlate.lua"]: in function 'updateState'
[string "PressurePlate.lua"]: in main chunk
[string "MessageSystem.lua"]: in function 'sendMessage'
[string "Map.lua"]: in function 'moveEntity'
[string "Party.lua"]: in function 'setPosition'
[string "Party.lua"]: in function 'update'
[string "Party.lua"]: in function 'update'
[string "Map.lua"]: in function 'updateEntities'
[string "Dungeon.lua"]: in function 'updateLevels'
[string "GameMode.lua"]: in function 'update'
[string "Grimrock.lua"]: in function 'display'
[string "Grimrock.lua"]: in main chunk

OS Version 6.1

OEM ID: 0
Number of processors: 8
Page size: 4096
Processor type: 586

Total memory: 12285 MB
Free memory: 8312 MB

Display device 0:
Device name: \\.\DISPLAY1
Device string: NVIDIA GeForce GTX 460
State flags: 08000005

Display device 1:
Device name: \\.\DISPLAY2
Device string: NVIDIA GeForce GTX 460
State flags: 00000000

Display device 2:
Device name: \\.\DISPLAYV1
Device string: RDPDD Chained DD
State flags: 00200008

Display device 3:
Device name: \\.\DISPLAYV2
Device string: RDP Encoder Mirror Driver
State flags: 00200008

Display device 4:
Device name: \\.\DISPLAYV3
Device string: RDP Reflector Display Driver
State flags: 00200008

[MrLate]

I get the same error!

assets/dungeons/grimrock/level13.lua:0: attempt to index a nil value
stack traceback:
assets/dungeons/grimrock/level13.lua: in main chunk
[string "TriggerEvents.lua"]: in function 'fire'
[string "PressurePlate.lua"]: in function 'released'
[string "PressurePlate.lua"]: in function 'updateState'
[string "PressurePlate.lua"]: in main chunk
[string "MessageSystem.lua"]: in function 'sendMessage'
[string "Map.lua"]: in function 'moveEntity'
[string "Party.lua"]: in function 'setPosition'
[string "Party.lua"]: in function 'update'
[string "Party.lua"]: in function 'update'
[string "Map.lua"]: in function 'updateEntities'
[string "Dungeon.lua"]: in function 'updateLevels'
[string "GameMode.lua"]: in function 'update'
[string "Grimrock.lua"]: in function 'display'
[string "Grimrock.lua"]: in main chunk

OS Version 6.1

OEM ID: 0
Number of processors: 2
Page size: 4096
Processor type: 586

Total memory: 4095 MB
Free memory: 1791 MB

Display device 0:
Device name: \\.\DISPLAY1
Device string: ATI Radeon HD 4800 Series
State flags: 08000005

Display device 1:
Device name: \\.\DISPLAY2
Device string: ATI Radeon HD 4800 Series
State flags: 00000000

Display device 2:
Device name: \\.\DISPLAYV1
Device string: RDPDD Chained DD
State flags: 00200008

Display device 3:
Device name: \\.\DISPLAYV2
Device string: RDP Encoder Mirror Driver
State flags: 00200008

Display device 4:
Device name: \\.\DISPLAYV3
Device string: RDP Reflector Display Driver
State flags: 00200008

My game never crashed before this. And I do want to find some secrets from last floors.