Error: Unable to open port: invalid command name "installs_libs"

[Andrew Todd]

On Fri, Aug 12, 2011 at 5:49 PM, Ryan Schmidt <ryandesign at macports.org> wrote:
> I am surprised a force-quit was necessary. What was the last thing in the installer's log window when this occurred?

Didn't know that there was an installer log. Makes me feel a little
better about Macs (I'm coming from Linux) -- at least I know now I
have a chance at diagnosing the problem:

Aug 15 09:14:54 LM-BWI-00712218 installd[4041]: ./postflight: --->
Updating MacPorts base sources using rsync

After this, I can't quit the installer because "the installer is
busy." Presumably there's nothing else of importance in the postflight
script after this that I'm missing?

> What happens on your network when using rsync? Does it just hang? That could explain the installer hanging. But I would have expected rsync to exit with an error code if a problem occurred.

Unfortunately, whatever the network is doing to block rsync doesn't
result in an error; the command-line process just hangs as well.

Given that's the case, I guess there's not much you can do about it.
But thanks for looking into it.