WowAce

When switching spec talents, Bartender is generating LUA errors that just keep going until you reload the UI.

First error message:

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1x ...er4/libs/LibActionButton-1.0-106/LibActionButton-1.0.lua:2296: IsAttackSpell(): Invalid spell slot
[string "=[C]"]: in function `IsAttackSpell'
[string "@Bartender4/libs/LibActionButton-1.0-106/LibActionButton-1.0.lua"]:2296: in function `IsAttack'
[string "@Bartender4/libs/LibActionButton-1.0-106/LibActionButton-1.0.lua"]:1936: in function <...er4/libs/LibActionButton-1.0/LibActionButton-1.0.lua:1935>
[string "@Bartender4/libs/LibActionButton-1.0-106/LibActionButton-1.0.lua"]:1613: in function `method'
[string "@Bartender4/libs/LibActionButton-1.0-106/LibActionButton-1.0.lua"]:1179: in function <...er4/libs/LibActionButton-1.0/LibActionButton-1.0.lua:1176>
[string "@Bartender4/libs/LibActionButton-1.0-106/LibActionButton-1.0.lua"]:1426: in function <...er4/libs/LibActionButton-1.0/LibActionButton-1.0.lua:1250>

Locals:
(*temporary) = nil
(*temporary) = "spell"

---

Followed by a loop of this error message:

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800x ...er4/libs/LibActionButton-1.0-106/LibActionButton-1.0.lua:2302: IsSpellInRange(): Invalid spell slot
[string "=[C]"]: in function `IsSpellInRange'
[string "@Bartender4/libs/LibActionButton-1.0-106/LibActionButton-1.0.lua"]:2302: in function `IsUnitInRange'
[string "@Bartender4/libs/LibActionButton-1.0-106/LibActionButton-1.0.lua"]:2218: in function `IsInRange'
[string "@Bartender4/libs/LibActionButton-1.0-106/LibActionButton-1.0.lua"]:1449: in function <...er4/libs/LibActionButton-1.0/LibActionButton-1.0.lua:1432>

Locals:
(*temporary) = nil
(*temporary) = "spell"
(*temporary) = nil

---

Not sure what triggers persay, but change in Rogue Talents for some things like Atrophy Poison to not having it might be one. 

The issue is caused by tricks of the trade, I tested the talent swaps. I don't know HOW it's caused by tricks, but by the spell existing it just causes the endless lua error flood.