pymol fails to start

[Francesco Pietra <chiendarret@gmail.com>]

Hello;
i have installed (apt-get install ...) on Debian amd64 lenny package
pymol 1.1-1, which also installs apbs blt freeglut3 libmaloc1
python-pmw python-tk tk8.4. The executable is in /usr/bin/pymol. As it
can be seen below, dpkg reports installe, while command "python"
reports problems. Removed, to rely on working CHIMERA and VMD, however
curious about this affair.

Thanks
francesco pietra

francesco@tya64:~$ dpkg --status pymol
Package: pymol
Status: install ok installed
Priority: optional
Section: science
Installed-Size: 16636
Maintainer: Debichem Team <debichem-devel@lists.alioth.debian.org>
Architecture: amd64
Version: 1.1-1
Depends: python (<< 2.6), python (>= 2.5), python-support (>= 0.7.1),
freeglut3, libc6 (>= 2.7-1), libfreetype6 (>= 2.3.5), libgcc1 (>=
1:4.1.1), libgl1-mesa-glx | libgl1, libglu1-mesa | libglu1, libpng12-0
(>= 1.2.13-4), libstdc++6 (>= 4.1.1), zlib1g (>= 1:1.1.4), python-tk,
python-pmw
Recommends: apbs
Description: Molecular Graphics System
 PyMOL is a molecular graphics system targetted at medium to large
 biomolecules like proteins. It can generate high-quality publication-ready
 molecular graphics images and animations.
 .
 Features include:
  * Visualization of molecules, molecular trajectories and surfaces
    of crystallography data or orbitals
  * Molecular builder and sculptor
  * Internal raytracer and movie generator
  * Fully extensible and scriptable via a python interface
 .
 File formats PyMOL can read include PDB, XYZ, CIF, MDL Molfile, ChemDraw,
 CCP4 maps, XPLOR maps and Gaussian cube maps.
Homepage: http://pymol.sourceforge.net
francesco@tya64:~$ pymol
Traceback (most recent call last):
  File "/var/lib/python-support/python2.5/pymol//__init__.py", line
183, in <module>
    import pymol
  File "/var/lib/python-support/python2.5/pymol/__init__.py", line
438, in <module>
    from pymol import _cmd
ImportError: /var/lib/python-support/python2.5/pymol/_cmd.so:
undefined symbol: PyUnicodeUCS4_SetDefaultEncoding
francesco@tya64:~$
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