Thanks, but I finally got it working with v1.12. I had to completely uninstall ZoneAlarm firewall, and turn off windows firewall. I assume this is a problem with my software environment, although I have to say that none of my other networking programs have had any trouble. That includes two different arduino development environments.
I’m about to update the other thread related to this. But the short answer is that Cura creates a more sensible path for bridging (fewer retractions immediately before a bridge) than slic3r. But the lack of a ‘cooling fan on for bridging’ option is a detriment.
Thanks again for your response.