I have installed Virtualbox and installed unbent 13.10 on my Macbook Pro 9,1. I have opened virtual box and ran unbent and receive the following message.

"This kernel requires an x86-64 CPU, but only detected an i686 CPU.
Unable to boot - please use a kernel appropriate to your CPU."

Can anyone advise how i fix this and provide any links if I have installed the incorrect version for 9,1