I was on 3.55 kmeaw
Ran wipe history
Deleted all homebrew
Reinstalled 3.55 OFW from recovery menu
Formatted the hard drive
Reset settings to default
I'm sure not all of these things were necessary, but better safe than sorry
Now I'm installing the 3.56 update
We'll see how this goes...
EDIT...
If you press 'e' on the first option, it should let your edit it.
Add your boot options to the kernel line and try again.
You'll have to do that on every boot unless you add the boot options to your grub.cfg.
Grub2 doesn't like you editing grub.cfg by hand so I'm not quite sure how to do that...