you will try to use the alternative installer?
Get the alternative installer of SAS Free at http://downloads.superantispyware.com/downloads/SAS_FREE.EXE
Proceed by installing the alternate version of the installer.
See also: http://www.superantispyware.com/supportfaqdisplay.html?faq=71
If installing is still a problem, make sure there's no existing SAS Free that is maybe corrupted, please run the SuperAntispyware Uninstallation Assistant by downloading it from http://www.superantispyware.com/downloads/SASUNINST.EXE then proceed to re-install SAS Free.
I am getting a security error message when i am trying to install Superantispyware-free version.
It says that the digital signature is missing.
I am using windows XP SP3
Please tell me how i can overcome this problem