The program keeps freezing up on me. sometimes it only gets to 3 urls and freezes, sometimes it gets to 70 or so and freezes. Would that be indicative of the setup that I am using to try to site map? I got the VM software just to run this sitemapper on my Mac, so I am sad that it is not working

any advice?
(I have a pc available now, can and should i transfer the software over to it?)