This particular failure happened during the combat trial at the end of the antimagic quest, but I've noticed failures that I couldn't account for that also might be related.
[CHAT] selected I am ready for the test nil test
8 frames in 1.077 seconds = 7.42804 FPS (32 keyframes)
[CHAT] selected But wha.. [you notice your first opponent is already there] function: 0xb93f5e8 nil
Equipment resolver for skeleton mage
Equipment resolver skeleton mage weapon staff nil
Zone made us an equipment according to filter! ash staff
Autorequire stats
mag 16
addTmpVal max_mana 10 :=: 1 1
addTmpVal combat_spellcrit 2 :=: 2 2
addTmpVal combat_spellpower 2 :=: 3 3
[MOVE] actor moved without a starting position skeleton mage 39 8
Loading tile npc/skeleton_mage.png
11 frames in 1.014 seconds = 10.8481 FPS (45 keyframes)
10 frames in 1.039 seconds = 9.62464 FPS (28 keyframes)
266 ticks in 10.003 seconds = 26.592 TPS
10 frames in 1.078 seconds = 9.27644 FPS (32 keyframes)
skeleton mage 17146 dumb ai talents can use Manathrust T_MANATHRUST
skeleton mage 17146 dumb ai talents can use Flame T_FLAME
dumb ai uses T_FLAME
[LOG] Skeleton mage casts Flame.
USING table: 0x8a6ba98 Flame
[SPELL CRIT %] 3
[PARTICLE] Loading from /data/gfx/particles/bolt_fire.lua
[PARTICLE] Loading from /data/gfx/particles/firetrail.lua
Adding entity 17149 after 17146
[SOUND] loading from /data/sound/talents/fire.lua :=: /data/sound/talents/fire.wav :>
[SOUND] :=> userdata: 0xb156014
[QUEST] try update status on Zoinks antimagic 101 nil
[LOG] #LIGHT_RED#Quest 'The Curse of Magic' is failed! #WHITE#(Press 'j' to see the quest log)
[tome] joylove: You can't just release an expansion like one would release a Kraken XD
--
[tome] phantomfrettchen: your ability not to tease anyone is simply stunning
Xanuvena, the lost anorithil 50761 dumb ai talents can activate Hymn of Perseverance T_HYMN_OF_PERSEVERANCE
dumb ai uses T_HYMN_OF_PERSEVERANCE
[LOG] Xanuvena, the lost anorithil activates Hymn of Perseverance.
[SOUND] loading from /data/sound/talents/spell_generic2.wav :=: userdata: 04D9F100
addTmpValTable on_melee_hit 10 7.0278009560551 :=: 3 3
addTmpVal stun_immune 0.3 :=: 4 4
addTmpVal confusion_immune 0.3 :=: 5 5
addTmpVal blind_immune 0.3 :=: 6 6
[PARTICLE] Loading from /data/gfx/particles/darkness_shield.lua
[QUEST] try update status on Graziel antimagic 101 nil
[LOG] #LIGHT_RED#Quest 'The Curse of Magic' is failed! #WHITE#(Press 'j' to see the quest log)
[LOG] Betassra, the lost anorithil activates Hymn of Perseverance.
[LOG] #LIGHT_RED#Quest 'The Curse of Magic' is failed! #WHITE#(Press 'j' to see the quest log)