I just ran this and got 5 message boxes as I suspected. If you're having problems Mikeman27294 please post a re-producing script of the problem. AU3_Example.txt file: MsgBox(0, "It Works", "Hello World") AutoIt Script: _RunAU3("AU3_Example.txt") _RunAU3("AU3_Example.txt") _RunAU3("AU3_Example.txt") _RunAU3("AU3_Example.txt") _RunAU3("AU3_Example.txt") Func _RunAU3($sFilePath, $sWorkingDir = "", $iShowFlag = @SW_SHOW, $iOptFlag = 0) Return Run('"' & @AutoItExe & '" /AutoIt3ExecuteScr