Help to a Gamer

Well i need help to make a server launcher for a Quake3
The archive .ba for windows say this

cd …
quake3.exe +set fs_game arena +set vm_game 0 +set sv_pure 0 +set bot_enable 1 +set sv_punkbuster 0 +set dedicated 2 +set net_port 28000 +exec server.cfg

Thats means:

tell application “Quake3 G4”

end tell

do shell script ("~/Carpeta\\ Diego/Quake3/Quake3\\ G4.app/Contents/MacOS/Quake3\\ G4 +set fs_game arena  +set vm_game 0 +set sv_pure 0 +set bot_enable 1 +set sv_punkbuster 0 +set dedicated 2 +set net_port 28000 +exec server.cfg")

But dont start and crash… its a problem with the script or to the game?
Sorry… but my english its not the best xD
Cya! and thx!

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