SINS 2.1 series use [You must be registered and logged in to see this link.] from Microsoft; and Kaspersky is the only antivirus company out there that black list this library (it might as well black list Microsoft Windows).
To run SINS 2.1 properly without turning off the antivirus, you must add exception to files with name "PWE.dll".
To run SINS 2.1 properly without turning off the antivirus, you must add exception to files with name "PWE.dll".