Why i got this error ?

[gytisan]

I getting error:

[2012-03-11 19:12:39] Starting panel

[2012-03-11 19:12:39] ERROR: panel\gui_client.lua:7: attempt to call global 'guiGetScreenSize' (a nil value)

And bind key to close/open panel F7 Dont work

How to solve it ?

[Cadu12]

Post full code your script.

[gytisan]

meta.xml

"DD" type">type">type="script" version="3.7.0" /> 
  
>type="client"/> 

gui_client.lua I will dont post full code only where error

toServer = {} 
theSkins = {} 
theTimers = {} 
theMessages = {} 
local cnt = 0 
local boxW, boxH = 333, 111 
local sW, sH = guiGetScreenSize() 
local boxX, boxY = sW/2 - 166, sH/2 - 50 
local headX, headY = boxX + 60, boxY + 12 
local headXb, headYb = boxX + 277, boxY + 40 
local textX, textY = boxX + 13, boxY + 48 
local textXb, textYb = boxX + 320, boxY + 98 
local textF = 1.3 
local headF = 2.5 
local timeDeath = 1 
local colorSet = "name" 
local nowPlaying = false 
local black = tocolor(0,0,0,255) 
local carcolor1, carcolor2 

[Cadu12]

We are not helping steal.