I dunno if I should post this question here or on the troubleshooting board, but this seems to be where everyone is going for HD help, so-
I followed these instructions for the hybrid setup:
Using these files-
After some trouble getting CWM to boot, I did finally get to install everything, and it all seemed to go well (although the screen would just flash whenever I tried to wipe the Dalvik cache, if that matters). I started up the Nook HD, and now it's been stuck on the boot screen (the one with the spinning circle), for at least a good half hour now. Any idea what went wrong?