[ndnSIM] Visualizer Module Bug

[Charlie Gettys]

Hi,
I've been trying to run some some simulations. I'm running ndnsim 2.1, 
and whenever I use a default Producer with a payload of more than ~90 
bytes, the visualizer module will crash. The same simulations run fine 
without the visualizer module. Does anyone know how to fix this?

I've been running the simulation with the following command:
sudo ./waf --run scratch/wifi-attempt08 --vis

My script and an error log is attached.

Sincerely,
                Charlie Gettys

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sudo ./waf --run scratch/wifi-attempt08 --vis --command-template="gdb --args %s <args>"
Waf: Entering directory `/home/cg/ndnSIM/ns-3/build'
Waf: Leaving directory `/home/cg/ndnSIM/ns-3/build'
Build commands will be stored in build/compile_commands.json
'build' finished successfully (2.706s)
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
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Reading symbols from /home/cg/ndnSIM/ns-3/build/scratch/wifi-attempt08...done.
(gdb) run
Starting program: /home/cg/ndnSIM/ns-3/build/scratch/wifi-attempt08 \<args\> --SimulatorImplementationType=ns3::VisualSimulatorImpl
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19-gdb.py", line 63, in <module>
    from libstdcxx.v6.printers import register_libstdcxx_printers
ImportError: No module named 'libstdcxx'
Could not load icon applets-screenshooter due to missing gnomedesktop Python module
Could not load icon gnome-terminal due to missing gnomedesktop Python module
scanning topology: [0, 5) nodes...
[New Thread 0x7fffd73ac700 (LWP 2947)]
[New Thread 0x7fffd6bab700 (LWP 2948)]
[Thread 0x7fffd73ac700 (LWP 2947) exited]
[Thread 0x7fffd6bab700 (LWP 2948) exited]
[New Thread 0x7fffd6bab700 (LWP 2949)]
assert failed. cond="IsStateOk ()", file=../src/network/model/packet-metadata.cc, line=688
terminate called without an active exception

Program received signal SIGABRT, Aborted.
[Switching to Thread 0x7fffd6bab700 (LWP 2949)]
0x00007fffe85dacc9 in __GI_raise (sig=sig at entry=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56	../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.