Cannot deactivate chant of fortitude

[Bokkelul]

[LOG] K'g?ck deactivates Chant of Fortitude.
stack traceback:
[C]: in function 'error'
/engine/interface/ActorTalents.lua:248: in function </engine/interface/ActorTalents.lua:232>
Lua Error: /engine/interface/ActorTalents.lua:271: /engine/interface/ActorTalents.lua:248: /mod/class/Actor.lua:5124: attempt to index field 'sustain_slots' (a nil value)
At [C]:-1
At [C]:-1 error
At /engine/interface/ActorTalents.lua:271 useTalent
At /mod/dialogs/UseTalents.lua:220 use
At /mod/dialogs/UseTalents.lua:82 fct
At /engine/ui/TreeList.lua:305 onUse
At /engine/ui/TreeList.lua:204 fct
At /engine/Mouse.lua:56 receiveMouse
At /engine/Mouse.lua:94 delegate
At /engine/ui/Dialog.lua:602 mouseEvent
At /engine/ui/Dialog.lua:343 fct
At /engine/Mouse.lua:56

I can't level up now

[Stuntofthelitter]

1.2.5 character played in 1.3.0 I'm guessing, yeah?

[Bokkelul]

Yeah it asked me to download something so I could play it in 1.2.5 or something like that so I did but when I load it now says 1.3 . so idunno what can I do to fix it? that is: if I can do anything about it myself. I'd be slightly annoyed if I'm just screwed cuz this guy so far has been rekkin everything