Lua Problem with spells?

[Skoczi]

Hello i have problem because when someone on my server use spell in console i see that error(warning) lag is after someone's dead [0.3.6pl1]

[21/06/2015 21:35:20] [Error - Spell Interface]
[21/06/2015 21:35:20] In a timer event called from:
[21/06/2015 21:35:20] data/spells/scripts/attack/kamehameha.luanCastSpell
[21/06/2015 21:35:21] Description:
[21/06/2015 21:35:21] (luaGetCreatureLookDirection) Creature not found

http://pastebin.com/6Yux1wsQ

 

[owned]

You need to use if isCreature(cid) incase the player dies or logs or whatever.