The perfect_spy script is the other script in EB. Once you have activated the EBBS, hit 'F1'. It comes up with a scroll for controls. You need to hit the question mark on that scrooll, and you will get the option to activate the perfect_spy script (genericScript.txt in the same folder as the EBBS). (Advisor pop up similar to the one for the EBBS).
I have not installed EB 1.2 since November last year, so I am not 100% certain if the script is blocked out by a ';'
Either way it should be something like;
; This is a placeholder script. Its purpose is to provide a valid
; but completely safe script to resolve the Script command in
; the Generic_Script_Thread. See EXPORT_DESCR_ADVICE.TXT.
;
script
console_command toggle_perfect_spy
end_script
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