Starting IRIS Community edition on multiple core CPU...

I successfully installed IRIS Community edition on my new RYZEN7 desktop. However when I try to start IRIS I get an error event that states IRIS cannot start due to too many cores. (I have 15 on this CPU).

So how do I resolve this? I do have to install the image onto a single core? Or how many cores can this version run on?

Any comments/suggestions or hysterical laughter will be very much appreciated.

Thanks,
Gary Marston