Yes the version is the same, also the digital signature is the same . Furthermore I tried to install what I have downloaded from your URL, but with the same error again. I don't think that I have a rouge, I'm an advanced user who is paranoid about security and I downloaded Rouge Remover in order to recommend it for a group of friends to check their machines for rouges, but 2 of them got the same error as me, and 1 was successful in installing and using Rouge Remover. All of us have WinXP Sp2 with different applications installed. I searched this forum to find some others database errors claims, so I think there is some bug or at least some conflict with a certain unknown application. I tried to install again on a fresh installed Windows without any programs installed and RR was successful this time, so conflict issue is the most probably reason in my personal opinion . I hope that developers can find a resolution in their lab.