Well, I don't know how to check TCP connections on Mac, but in Windows it's pretty easy.

I closed down my browser and my email program and launch Poser Pro 2010. Then I do nothing for about a minute to let a flurry of connections disappear, and then I do:

netstat -b

I see this:

Active Connections

  Proto  Local Address          Foreign Address        State           PID
  TCP    tczotter-d820:1325     localhost:11630        ESTABLISHED     49436
  [LSMGUIAIR.exe]

  TCP    tczotter-d820:11630    localhost:1325         ESTABLISHED     89592
  [PoserPro.exe]

That's the two sides of the persistent connection between LSMGUIAIR and PoserPro.

If the connection were to be lost, those would not be "ESTABLISHED". If you get in the state where the + button is missing, you might wait 1 minute and then run netstat -b and see what it says.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)