Problem resolved through email. Customer was running a 4.X installer, not a 5.0 installer. Our latest installer can always be found here: http://www.lansweeper.com/Download.aspx
Could you please ensure that you are running the latest Lansweeper installer, which can be found here: http://www.lansweeper.com/Download.aspx If you continue to have problems, contact support@lansweeper.com