This of interest to me, but:
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AlarmClock.ahk
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Error: Parameter #2 invalid.
Specifically: HKEY_USERS\.DEFAULT\Control Panel\International
Line#
009: Menu,Tray,NoStandard
010: Menu,Tray,Add,AlarmClock,SHOW
011: Menu,Tray,Add,&Exit,EXIT
012: Menu,Tray,Default,AlarmClock
013: Menu,Tray,Click,1
014: Menu,Tray,Tip,AlarmClock
016: use24 = 0
---> 017: RegRead,timeformat,HKEY_USERS\.DEFAULT\Control Panel\International,sTimeFormat
The program will exit.
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OK
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Windows 7 x64
Clock set to yyyy-MM-dd