VMWARE and 10.1 Beta 3

Hey, I am wondering if there is a trick to install 10.1 beta to vmware? I have tried a couple times and grubs keeps giving me an error of 18. First I used the virtual drive setting and the second time I set up a drive 6gigs fixed spaces. It seem to happen after the first disc getting done with insall and reboots to bring up the system the first time. Any help would be great. Payne