<4.36)>
3x Usage: CastSpellByName(name[, target])
[string "=[C]"]: ?
[string "=[C]"]: in function CastSpellByName' [string "@Skillet\Skillet-4.36.lua"]:1285: in function ChangeTradeSkill'
[string "@Skillet\Skillet-4.36.lua"]:1260: in function `?'
[string "@datastore\libs\AceTimer-3.0\AceTimer-3.0-17.lua"]:55: in function <DataStore\libs\AceTimer-3.0\AceTimer-3.0.lua:50>

Locals:
(*temporary) = nil

I suspect that you have a corrupted install of Skillet or a major conflict with another addon.

Please download Skillet-4.36 from here, verify the MD5 checksum, manually install it, and try again.

If it still fails, please disable all other addons and try one more time.

If it still fails, then I'll need you to enable Skillet debugging, create a single failure, and then upload the data for me to analyze. I'll give further instructions if we get to this point.

Fixed