How do you get rid of a MISSING MIDI PORT that keeps showing up when launching a template created by someone else? I’ve gone to my Studio Setup and the problematic port is not showing at all, so it’s not like I could hide its visibility or mark it as inactive. Yet whenever I open the template it keeps showing me the screenshot attached here.
Open the template and make sure that the midi ports and whatever other things like the I/O buses are correct. Then save that as a template. Make sure it opens correctly then trash the other one.
Regards 
Hi, it sounds like I did exactly that. I opened the 3rd party template, did my tweaks, saved as new template (kept same name but overwrote the other). Keeps telling me about MISSING PORTS for Juno. Annoying!
SOLVED. I had to uncheck Map All MIDI box in MIDI Devices in order to get prompted for reassignment when launching the template.