http://www.icyphoenix.com/viewtopic.php?f=35&t=7146&p=49058#p49058
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Mighty Gorgon
Tue 25 May, 2010 16:53

Re: Hacking Attemp When Trying To Open Install/install.php
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Make sure you have fixed config.php with the new constant. I think you have not followed exactly updates instructions.