Newly upgraded -CURRENT box does not boot

Hi there,

I was told to e-mail these addresses with this.

I did an `svn update` on /usr/src last night, build world and kernel as 
usual. This morning I installed the kernel, booted into single user, 
installed world and did mergemaster -Ui as usual. The new kernel had 
booted fine. Upon reboot, the machine will no longer boot:

     Startup error in /boot/lua/loader.lua:
     LUA ERROR: cannot open /boot/lua/loader.lua: no such file or directory

     can't load 'kernel'

Many things in the bootloader do not work, including "boot kernel.old", 
"ls /boot", and various other things (most if not all just result in 
"Command failed"). Interestingly, "ls /mnt" works, other directories do 
not. That's the only clue I have.

I'm able to reboot in an installer image and mount the drive just fine. 
Everything is there and is as expected, including /boot/lua/loader.lua.

I re-installed everything in /usr/src/stand (chroot'd on the installer 
image, and "cd /usr/src/stand && make clean all install"). This did not 
fix the problem.

Does anybody happen to have any ideas?

Thanks,

-Brett