I've lost two characters to this now, both above 20th level. They're not dead, and the game technically loads, but you can't really play the game without a map or any character tokens.
I do have some add-ons from Steam installed, so it's possible the problem is from one of them. The recommended zone progression section of the wiki didn't seem to have any mention of this vampire lair, but I assumed it was added in the new version.
Here are the parts from the log that talk about errors:
and[aiParseTalent] FAILED TO PARSE tactical table function for T_THERMAL_AURA
=> because of error /data/talents/psionic/projection.lua:78: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_HYMN_OF_SHADOWS
=> because of error /data/talents/celestial/hymns.lua:30: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_VENOMOUS_STRIKE
=> because of error /data/talents/cunning/poisons.lua:305: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_ROLL_WITH_IT
=> because of error /data/talents/uber/dex.lua:231: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_HYMN_OF_DETECTION
=> because of error /data/talents/celestial/hymns.lua:30: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_FRENZIED_FOCUS
=> because of error /data/talents/psionic/projection.lua:554: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_CHARGED_AURA
=> because of error /data/talents/psionic/projection.lua:78: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_KINETIC_AURA
=> because of error /data/talents/psionic/projection.lua:78: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_HIDDEN_RESOURCES
=> because of error /data/talents/uber/wil.lua:184: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_SUN_BEAM
=> because of error /data/talents/celestial/sun.lua:36: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_HIGHBORN_S_BLOOM
=> because of error /data/talents/misc/races.lua:142: attempt to index local 'self' (a nil value)
[aiParseTalent] FAILED TO PARSE tactical table function for T_HYMN_OF_PERSEVERANCE
=> because of error /data/talents/celestial/hymns.lua:30: attempt to index local 'self' (a nil value)
ERROR:
Game version: tome-1.7.2
Addons: sandworm-tweaks-1.5.10[X!], hz-escorts-1.3.1[X!], items-vault-1.7.0[O], bonusescorts-1.3.1[X!], opaque-tooltips-1.5.5[X!], adventurers-pack-1.6.0[X!], lumberjack_map-1.7.0[X], kryl_map-1.7.0[X], moretales-1.2.5[X!], possessors-1.7.0[O], merchant_map-1.7.0[X], zomnibus-1.7.0[X], nullpack-1.5.10[X!]
Game version (character creation): tome-1.7.2
Lua Error: /mod/class/Player.lua:313: attempt to index field 'level' (a nil value)
At [C]:-1 __index
At /mod/class/Player.lua:313 moveDir
At /mod/class/Game.lua:2136
At /engine/KeyBind.lua:231