** Can the script be used on replicated sites? **
I don't know what you mean by "replicated sites". Although not CalendarScript's author, if these are different domains (or even sub-domains), I think the licence terms are quite clear: "A license may be used on and accessed from only ONE domain.".
But if you have any doubts, I suggest you contact Matt (CalendarScript's author) via email and ask.
JMO
Dan O.
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