Dear Dr.F Long, The following imformation is what I get from python. " Python 2.4.5 (#1, Sep 18 2008, 14:53:26) [GCC 3.2 20020903 (Red Hat Linux 8.0 3.2-7)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> from pyexpat import * >>> " Although I have realized that this problem is not specially related to BALBES, I don't konw how to solve it. Thank you. Xiang Liu the fourth year Ph.D candidate lab of structural biology, college of life science Peking University, Beijing, P.R.China 100871 Tel:86-10-62755714 --- 09年1月5日，周一, Dr. F Long <[log in to unmask]> 写道： 发件人: Dr. F Long <[log in to unmask]> 主题: Re: [ccp4bb] problem about BALBES 收件人: [log in to unmask] 日期: 2009,15,周一,3:09上午 Dear Xiang Liu, From the log file, it looks you use a version of Python that comes with CCP4 and the lib file 'pyexpat.so' in it may have a problem (or this file does not work properly in your machine). Please could you do the following to help us find what kind of problem it is. In one of your directories (anyone): 1) type python 2) it will show something like Python 2.4.3 (#1, Oct 23 2006, 14:19:45) [GCC 4.1.1 20060525 (Red Hat 4.1.1-1)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> 3)type from pyexpat import * i.e >>> from pyexpat import * Please let me know what shows in your screen. This problem may be due to a python lib file problem we did not see here, not be related particularly to BALBES. Thanks, Fei 2009/1/4 Xiang Liu <[log in to unmask]>: > I just installized the CCP4-6.10 and tried to use BALBES for MR. But I have > only got the error log file as following: > "/software/exe/Xtal/CCP4/CCP4_6.10/ccp4-6.1.0/share/balbes/BALBES_0.0.1/bin_py/balbes", > line 37, in ? import PyExpat File > "/software/exe/Xtal/CCP4/CCP4_6.10/ccp4-6.1.0/share/balbes/BALBES_0.0.1/PyXML-0.8.4/xml/dom/ext/reader/PyExpat.py", > line 35, in ? from xml.parsers import expat File > "/software/exe/Xtal/pymol/ext/lib/python2.4/xml/parsers/expat.py", line 4, > in ? from pyexpat import * > ImportError: > /software/exe/Xtal/pymol/ext/lib/python2.4/lib-dynload/pyexpat.so: undefined > symbol: PyUnicodeUCS2_DecodeUTF8" > > I google the error message "undefined symbol: PyUnicodeUCS2_DecodeUTF8" and > cannot get some useful help. So I wonder if someone here had met similar > situation yet and how to solve it. > > Thank you for your attention. > > > Xiang Liu > the fourth year Ph.D candidate > lab of structural biology, college of life science > Peking University, Beijing, P.R.China > 100871 > Tel:86-10-62755714