Unable to program Adafruit NRF52840 Feather

Hi,

I've recently purchased the Adafruit NRF52840 Feather and found that I am unable to program it using the flash 'action' in Windows VS. I initially though this maybe a tool chain/PATH issue. However, I've additionally found that I can program the ada using the nrf52840dk/nrf52840 board target but not with the adafruit_feather_nrf52840/nrf52840 board target. In both cases I am attempting to flash the same Blinky example, the settings being:

Blinky Blinky_1
Board Target nrf52840dk/nrf52840 adafruit_feather_nrf52840/nrf52840
SDK Version v2.8.0 v2.8.0
Tool Chain Version v2.8.0 v2.8.0
Overlay None None

The Blinky project builds the config and application with out errors and flashes successfully, Blinky_1 builds both the config and app successfully but when flashing returns the following error

FATAL ERROR: required program JLink.exe not found; install it or add its location to PATH

I have both JLink v8.14 and NRF command line tools installed. I have been able to program the blinky_1 project using the VS terminal and calling 

PS C:\nRF_Connect_Projects\Sandbox\blinky_1\build> nrfjprog -f NRF52 --program merged.hex --sectorerase --verify

Any suggestions why the flash action is returning an error?

Thanks,

Andy

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