Howdy thank you. I'm on Embedded Studio 4.52. My issue was J-link related actually. Unrelated to the previous thread. Ultimately, the blinky_led project i was loading was for the nRF52832, and the SES was programming the nRF52810 on my eval board (which hosts my j-link). My bad. You can erase this whole thread if you want. Thank you for the reply.
My issue replicates this thread which was marked as [Closed]. "I am using SES for ARM version 3.50. The target is a Nordic 52832. I can set a breakpoint in the source window and when it occurs the yellow pointer is in the disassembly pane. If I single step, the debuggers does one assembler statement at a time. Last week the yellow pointer was in the source pane and single stepping did one C statement at a time. Any idea what I could have changed?" I have followed the advice provided (check paths…