locateNS() hangs when running stockquotes example in tutorial

Disclaimer, I'm brand new to Pyro4 and may be doing something stupid.
Details: running Debian Linux beaglebone 3.8.13-bone47 #1 SMP Fri Apr 11 
01:36:09 UTC 2014 armv7l GNU/Linux
on a Beaglebone Black C.
Pyro4: 4.31

I set the environment variable per tutorial:
export PYRO_SERIALIZERS_ACCEPTED=pickle, but I may have done this after 
running >pyro4-ns &

When running the stockquote tutorial phase 3, I determined using winpdb 
that aggregator.py was hanging on line 34
     ns = Pyro4.locateNS()

I then changed serializer to serpent (environment variables and code in 
three programs and example worked),
I then changed back to pickle, and now it worked.
I'm guessing that I may have started the nameserver before I set the 
environment variable, but if I now unset it,
I get lots of errors when starting the nameserver so I can't replicate it.

When it was hanging, I believe it was hanging while waiting to acquire a 
lock starting with __, in a release function, but since I
can't replicate it, I can't be more exact.

Summary, there may be a problem with the tutorial in 4.31 in an out of 
the box set-up.
Also, maybe some checks for consistency on serializers might help. Not 
sure if this helps, but for new users having the tutorials
work is so critical, I thought it might be worth taking the time, as 
Pyro4 looks like a great module; Irmen, much appreciated.

Bit_Pusher

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