Ask about encrypting script! Get error!

encryptScript "Doom.ms"
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rollout Doomo "Untitled" width:152 height:58
(
button btn1 "Button" pos:[1,2] width:50 height:16
button btn2 "Button1" pos:[51,2] width:50 height:16
button btn3 "Button2" pos:[101,2] width:50 height:16
editText edt1 "" pos:[-3,20] width:153 height:35
)
createDialog Doomo
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Hey Folk and maxscripter I'm still new in maxscript and try to make some script, I already done that , I try to encrypt that script but some strange thing happen , it do create encrypted file in specified folder, but when I remove ,say it "Doom.ms" or the original .ms from it folder and I execute the mse file it say "Runtime Error: EncryptScript cannot open: Doom.ms. Why that happen folk, do something missing here or do I do wrong!?

Thank!