Having trouble with the debugger

Hi,  

I'm trying to get the debugger to work on my target board.  I created the attached simple program to eliminate complexity.  

The debugger starts, but it starts running, not paused at the beginning of main().   And when I pause the debugger, and look at NRF DEBUG tab, it says there are no threads available.

Can you help me determine the problem?

COMP3.zip

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