Hi Eugene Fong,
Thanks for contacting Syncfusion support.
Yes. We can reproduce the reported error in Syncfusion ASP.NET Core Project Template.
We have fixed the issue from our end and it will be included with our upcoming 2018 Volume 1 release.
As a workaround, please open Visual Studio instance in Administrator mode and create Synfusion ASP.NET Core Project using Synfusion ASP.NET Core Project Template. The project will be created without any exception.
Please revert us, if you need further assistance on this.
Thanks,
Dheepa.K