sip.so: undefined symbol: PyUnicodeUCS4_AsWideChar

[Andreas Hinzmann]

Hello!

I am trying to install PyQt3 and I have the following problem:

> from qt import *
gives the the following error:
/.../python2.5/site-packages/sip.so: undefined symbol: 
PyUnicodeUCS4_AsWideChar

I have installed the following software:
qt-x11-free-3.3.6
Python2.5
sip-4.7.6
PyQt-x11-gpl-3.17.4
QScintilla-1.71-gpl-1.7.1

I have also tried to configure python with --enable-unicode=ucs4, but it 
didn't help.

Does anybody have an idea, what is the problem? Is it a conflict between 
different versions?

Thank you in advance,
Andreas