I'm running a duo-processor, so it was defaulting to 2 cores anyway and not loading with a "Power PC applications are no longer supported" message. I tried setting it to 1 core, but the same error still occurred.
Although I really have no experience in code / playing with terminal on a mac, I'm actually ok with toggling it that way and rebooting my system, and would love it if you could explain the steps / link to your source.
Thanks.