Hello,
Also, did you flashed some example with low power functionality before? Are you sure that your device it's not going to low power?
I also experienced something similar, but it would seem to be with certain build options as I built the SDK with all the IDE's.
Nonetheless, if you will use it with MCUXpresso, have you tried downloading the SDK just for the MCUXpresso IDE? I was able to run and debug the examples building the SDK for that single IDE. I'll keep looking for the other behavior, still could you please try this ?
Hope it helps
Regards,
Estephania