Por que me tira error el resource?

[UserToDelete]

Hace unos dias empece a hacer GUIs y triggerServers y todo eso. y al probarlo me tira error de manera extraña, ya que esta bien hecho.

El error

= Multi Theft Auto: San Andreas v1.3.4 
================================================================== 
= Server name      : vD scripting and GUI tools 
= Server IP address:  
= Server port      : 22003 
=  
= Log file         : ..ment/server/mods/deathmatch/logs/server.log 
= Maximum players  : 1 
= HTTP port        : 22005 
= Voice Chat       : Disabled 
= Bandwidth saving : Medium 
================================================================== 
[2014-01-10 20:27:51] Resources: 3 loaded, 0 failed 
[2014-01-10 20:27:52] Starting resources... 
[2014-01-10 20:27:53] Server minclientversion is now 1.3.4 
[2014-01-10 20:27:54] Querying MTA master server... success! 
[2014-01-10 20:27:54] Server started and is ready to accept connections! 
[2014-01-10 20:27:54] To stop the server, type 'shutdown' or press Ctrl-C 
[2014-01-10 20:27:54] Type 'help' for a list of commands. 
[2014-01-10 20:27:59] start: Requested by Console 
[2014-01-10 20:27:59] Starting shop 
[2014-01-10 20:27:59] start: Resource 'shop' started 
[2014-01-10 20:29:53] CONNECT: LGF//#264887VeNaD connected (IP: 192.168.1.34  Serial: 2EAB8C5D0D79071D0E548041C004DFA3  Version: 1.3.4-9.06007.5) 
[2014-01-10 20:29:58] JOIN: LGF//#264887VeNaD joined the game (IP: 192.168.1.34) 
[b][2014-01-10 20:30:08] ERROR: shop\client.lua:2: attempt to call global 'guiCreateWindow' (a nil value)[/b] 

El rango de el script que hice tambien lo dejo

function tienda() 
        ventana = guiCreateWindow(10, 10, 780, 580, "Tienda de armas - vD server", false) 
        guiWindowSetMovable(ventana, false) 

addCommandHandler("shop", tienda) 

[Alexs]

Debes definirlo en client-side en el 'meta.xml'.

[UserToDelete]

Debes definirlo en client-side en el 'meta.xml'.

Tienes razon que noob soy xdddd estoy llorando de la risa xDDD