Not sure if this is specific to KDS, MQX-Lite, or OpenSDA, but if I stick a breakpoint inside an interrupt callback while debugging an MQX-Lite application in KDS using OpenSDA, it hits the breakpoint and crashes. No continuing at that point, I can't examine variables or do much of anything. If I remove the breakpoint, the callback works fine and does what it should. This is on a FRDM-KE06 with KDS 1.0.1 beta. KDS stays alive, but I have to stop the debugger and cycle power on the FRDM-KE06 to restart.