[Bkchem-user] bkchem-0.13.0 installation challenges

[Reinhard Dunkel]

On Windows XP, the bkchem-0.13.0.exe installer gets me through some 
initial screens, but ends with the popup:

Error
---
C:\Program\ Files\BKChem\bkchem.iss
An error occurred while trying to copy a file:
The I/O operation has been aborted because of either a thread
exit or an application request.

I typed 30 times [Retry] in this popup, no effect. Its [Ignore]
seems to apply to individual Python files and only [Abort] works...

On CentOS Linux 2.6.18-128.4.1.el5PAE, the following packages are installed:
# yum install pycairo
  Package pycairo-1.2.0-1.1.i386 already installed and latest version
# yum install tcl
  Package tcl-8.4.13-3.fc6.i386 already installed and latest version
# yum install tk
  Package tk-8.4.13-5.el5_1.1.i386 already installed and latest version

But the BKChem installation fails with
# python3.1 bkchem.py
  File "bkchem.py", line 96
    print messages.no_pmw_text.encode( 'utf-8')
                 ^
SyntaxError: invalid syntax
# python bkchem.py
Traceback (most recent call last):
  File "bkchem.py", line 106, in <module>
    from main import BKchem
  File "/usr/local/bkchem-0.13.0/bkchem/main.py", line 23, in <module>
    from Tkinter import *
  File "/usr/local/lib/python2.6/lib-tk/Tkinter.py", line 39, in <module>
    import _tkinter # If this fails your Python may not be configured 
for Tk
ImportError: No module named _tkinter

Installing Python-2.6.2 from the source code distribution ends with 
"Failed to find the necessary bits to build these modules:
_tkinter           bsddb185           sunaudiodev
To find the necessary bits, look in setup.py in detect_modules() for the 
module's name."

/usr/local/Python-2.6.2/Modules contains _tkinter.c, but it fails to 
install. Could anybody please provide hints how I can get bkchem-0.13.0 
to work? I am interested to create 2D coordinates for molecules 
available only as their InChI.

Thank you
Reinhard