Thanks for finding these issues. I changed the block between NT837 and IT:NT831 to a new block called NS765X to prevent the issue with no block boundary at the straight leg and a signal facing away from NT837 per your reply:? /g/jmriusers/message/239254 .? I also removed the signal A:L01:SIG:WB:765. Then everything seems to be working well again. But if I put A:L01:SIG:WB:765 back at the boundary of NS720 - NS765 the Discover SML cant find any destinations and just hangs with "Discovering Signal Masts" and finds nothing - just as you stated in the previous reply /g/jmriusers/message/239253
I keep thinking that somewhere with all of my editing of this layout editor file there is a typo or some bit of leftover stuff in the file that is causing the issue.?