I have the nrf51822 eval board and I am just trying to download the blinky project. I have followed the quick start instructions in the nrf51822 user guide but every time I press download an error message pops up saying ' No Cortex-M SW Device Found' I have tried changing some of the settings in the options for target device but now a different error message pops up saying 'No CPU DLL specified'. Can anyone help?