I just received at 5410 development board om13077. I have followed all the instructions to get the blinky demo to work. As specified in instructions, I set software breakpoints and start the debugger and I occasionally get to choose the linker, and once it allowed me to choose the swd, but almost never to i see that menu. Then nothing happens. The code window shows a memory address and a button for "view disassembly..." . When I click it, the disassembly shows the error shown in the title of this question "Failed to execute MI command: -data-disassemble -s 4009754328 -e 4009754488 -- 3 Error message from debugger back end: Cannot access memory at address 0xeefffed8..with different addresses specified."