RT Kernel will not boot

[tonycorr]

I installed the rt kernel. Did not get any errors during the install but
when I select it during boot it gets to the message 'booting kernel' and
just hangs there . I have to use the power switch at that point to restart.

Found linux image: /boot/vmlinuz-3.12-6.towo-siduction-amd64
Found initrd image: /boot/initrd.img-3.12-6.towo-siduction-amd64
Found linux image: /boot/vmlinuz-3.12-1-rt-amd64
Found initrd image: /boot/initrd.img-3.12-1-rt-amd64.
The standard kernel boots fine.
I've tried uninstalling and re-installing. Same result .