Dear PyMol Experts,
I am quite new in pymol. I have just installed  python 2.3.2
and pymol-0.93 using "python" (i.e. pymol was
installed in site-packages of python). I am using RedHat 8.0
on a dual Xeon system.
Here's the problems that I am getting:
(1) Case  1:
>>> import pymol
>>> pymol.finish_launching()
>>> Segmentation fault (core dumped)
(2) Case 2:
>>> from pymol import cmd
after couple of seconds, it crashes again with the following error:
>>> Fatal Python error: GC object already tracked
Interestingly after ">>> from pymol import cmd", I can use the
external gui, run demos, etc. However as soon as I move my
mouse over the python shell,  the program aborts and gives
the "Fatal Python error: GC object already tracked"???
I have a feeling that this error is related to the external GUI application.
Is it possible to disable the external gui when I lounch pymol from
I really appreciate any help you can provide me. At first I was very excited
about using pymol in my research but now I am getting a little bit
frustrated. I need to find a way to launch pymol from python without
segmentation fault...
thanks alot,
Dr. Taner Yildirim, Ph.D. Physicist, Condensed Matter Science Group,                     NIST Center for Neutron Research,
PHONE: 301-975-6228     National Institute of Standards & Technology
FAX  : 301-921-9847                      Gaithersburg, MD 20899-8562
Web  :