@luckyluciano- Although I didn't have this problem, the instructions for installing the nightly build on the google code wiki page (here) seem to address offer a solution in step 7:
I don't remember updating fastboot before installing, and I got all the necessary files from the aforementioned google code pages.7. (only if you get a "Force close" loop) reboot into recovery, adb shell, and than type the following commands: "mount /dbdata -rw" , "cd /dbdata", "rm * -rf".
@Milton- I haven't been able to figure out how to make the swap enable at boot. There is an app called "swapper" in the market, but it can't enable on boot either, making it kind of pointless.