Hi Cormac,
Sorry for the delay in getting back to you.
We have checked with Kaspersky Small Office Security 2 installed machine, it did not find any problems till the end of the installation for Syncfusion 11.2 version setup. Could you please check with our latest version setup (12.3.0.36) and let us know if you have faced any issues with our installer?
Please let us know, if you need any further assistance on this.
Regards,
Sivaguru S