Spike Red Light?

[sand500]

I have one of the Innovation First Spikes hooked up to the PD board. Nothing else is connected to the spike, nothing to the M+ and M- and nothing to the pwm port.

When I turn on the robot, the spike has a solid red light.
According to the User Guide for the spike, red means reverse. However, if I take a multimeter to the M+ and M- terminals, i get 0V

When I take the multimeter to the 12V and GND terminals, I get 12V so the spike is definitely getting power. And definitely no chance of reverse polarity because 12V terminal is connected to the red on the PDB and GND is connected to black on the PDB.
Also, fuse looks intact.

I am really puzzled by this and I hope you guys can help.