[Urgente]erro moviments Call stack overflow

[izac ximenes 17]

Galera coloquei um script para os player não atravessarem a parede usando fly mais quando eu vejo o script ficando dando esse:

 [Error - MoveEvent::executeStep] Call stack overflow.
 [Error - CreatureEvent::executeWalk] Call stack overflow.
 [Error - MoveEvent::executeStep] Call stack overflow.
 [Error - MoveEvent::executeStep] Call stack overflow.
 [Error - CreatureEvent::executeWalk] Call stack overflow.
 [Error - MoveEvent::executeStep] Call stack overflow.
 [Error - MoveEvent::executeStep] Call stack overflow. 

moviments.xml

 

<movevent type="StepIn" itemid="11777-11785;1533-1542;11809-11811;5303-5304;1111-1119;873-878;2703;2767" event="script" value="blockwall.lua"/>

 

blockwall.lua

function onStepIn(cid, item, position, fromPosition)


local ghosts = {"Gastly", "Haunter", "Gengar", "Shiny Haunter", "Shiny Gengar", "Darkrai", "Duskull", "Dusclops", "Dusknoir", "Shiny Duskull", "Misdreavus", "Shiny Abra"}--alterado v2.6


if isSummon(cid) and  isInArray(ghosts, getCreatureName(cid)) then
  return true
else                                                                  --alterado v2.6
  doTeleportThing(cid, fromPosition, false)
end
end

[kamus9629 14]

tou precisandoe ajuda tambem eu coloco essa scripter mesm oerro do qe o dele