Hello, anti-viruses do not like ZylonShield, because it is packed with "The Enigma Protector", to avoid idiots like mega-arkade, zirak, and other new***s from unpacking it, and using a op-code editor to change what it does. Since most virus scanners automatically detect any programs packed with "The Enigma Protector", you will have to add an exception for the client folder. If you need assistance with this, please let me know what anti-virus you use, and I will point you in the right direction.
Thanks,
~RedEyes.