I want to point out that nulled scripts often contain callbacks, do-follow back-links, back-doors, and countless other additions that can be unpleasant at best.
Of course, it's the same risk every pirates run when using cracked software, alas, on a website it could potentially hit more people faster then virus.
And since the "hosting version" is hosted on a nulled page, rather then posted here for direct benefit for this community, I would be extremely careful of using it, even if it provides an easier "install".
Also,
invision-virus.com ?