Enigma Protector

Hello guys,
Actually i have tried to protect my application using enigma, after i tried to protect the application,
it shows an Error like this : ERROR: Unexpected exception: File is already protected with Enigma Protector!
The problem is i have never tried to protect this file before even when i run the original file there is nothing to show that the file is protected !
is there anyone cane help me out of this problem !? !? !
Is there any way to do something other way around with a file that has been protected with Enigma !?
Thanks in advance

Is the file compiled by you? What compiler are you using? You can bypass that message with setting "Don't check if file is compressed" in Misc->Other.