In my original post, I may have given the impression that a clean install would be highly recommended. We do not expect anyone to need to install SR4.1 through a clean installation method. Our statement on the clean install is only a precautionary statement for those who make modifications to Posers default installation as it may offer in inconsistent state which could possibly result in unexpected behavior. With this in mind, our instructions and expectations are for SR4.1 to successfully be installed to the existing installation.