KL25Z Freedom board, broken?

A few weeks ago I received my Freescale KL25Z 'Freedom' board.  The board uses something called OpenSDA, which means that it actually has two CPUs on board, one that runs the debug interface, and then the main CPU (an ARM Cortex M0+)

I followed the instructions but it seems that I've somehow bricked it.  I can connect to the SDA USB interface fine, and I can download some of the precompiled examples that come with it, but all I get is a blinking green LED, and no response from the host CPU at all.

Does anyone else have this board and have you had more success than me?