Hi Krys,
iirc the check box kept ticking itself, I do recall a number of hard boots, of core tho' not md,
and I also seem to remember that I'd entered 8N1 incorrectly in device data in dev template at some point , but can't for life of me remember if that's what the cure /reason was.
Also, I had probs with my setup at that time, with some changes apparently not "sticking" unless I shut down and rested the core for 20 mins or so, before rebooting, got to be worth a try,( I really must start taking notes, brain fried )
regards,
Ian