Jumping onto this thread. I am frustrated by this access key issue as well. I get the same message about port 52199 when trying to get the access code. First of all, I am behind my router anyway, so why do I need to open this port up for local network access? Second, I have opened up that port on my router and completely disabled my firewall and still get this error message when trying to get the access code. And no, I have nothing blocking this port. I have unistalled/reinstalled MC - same result. I appear to be dead in the water. Gizmo requires this key, MC won't give me the key.
The message is this -
Pop up 1 - Registering Server
Popup 2 - Library Server could not be registered with J River Media.
Please configure your firewall and router to allow incoming traffic on port 52199.
I never get the screen where it tells me the access number. Again, I don't understand why this port even needs to be open for local Lan access behind the router. The error message seems bogus.
Chris