无效的键形式applescript

我在一个我正在处理的程序中有以下代码

set outPath to "/Users/student/Desktop/Accounts.txt"
set x to text returned of (display dialog "Username" default answer "")
set y to text returned of (display dialog "Password" default answer "")
set RAccounts to (read POSIX file "/Users/student/Desktop/Accounts.txt")
if file path outPath exists
then 
get word 1 
else

然后它继续运行，但每当我试图编译它时，它都会给我以下错误

无效的密钥格式

有什么帮助吗？

试试：

set outPath to "/Users/student/Desktop/Accounts.txt"
set x to text returned of (display dialog "Username" default answer "")
set y to text returned of (display dialog "Password" default answer "")
try
    set RAccounts to read POSIX file outPath
on error
    -- file outPath does not exist … do things
end try

或

tell application "Finder"
    if exists POSIX file "/Users/student/Desktop/Accounts.txt" then
        beep
    else
        beep 2
    end if
end tell