symantec says KPACS has malware

Thank you for the notification. I was able to reproduce the described behavior.

Symantec throws a threat warning due to reputation. This does not necessarily mean that the application/installer is indeed infected. I assume that the reputation notification is based on the age of the software, as the 1.6.0 installer has been out for about 7.5 years. And the older software gets the higher the risk of an infection with malicious software.