[XeTeX] segmentation fault

[Yves Codet]

Hello.

Iʼve recently installed teTeX and XeTeX on Mac OS X 10.4.7 thanks to  
iInstaller. When I try and typeset a file which compiled normally on  
10.3.9 I get the following error:

This is XeTeX, Version 3.141592-2.2-0.994a (Web2C 7.5.3)
entering extended mode
(./main.tex
LaTeX2e <2003/12/01>
Babel <v3.8d> and hyphenation patterns for american, french, german,  
greek, lat
in, portuges, spanish, nohyphenation, loaded.
(/usr/local/teTeX/share/texmf.tetex/tex/latex/base/book.cls
Document Class: book 2004/02/16 v1.4f Standard LaTeX document class
(/usr/local/teTeX/share/texmf.tetex/tex/latex/base/bk12.clo))
(/usr/local/teTeX/share/texmf.tetex/tex/latex/boxedminipage/ 
boxedminipage.sty)
(/usr/local/teTeX/share/texmf.local/tex/xelatex/fontspec/fontspec.sty
(/usr/local/teTeX/share/texmf.tetex/tex/latex/tools/calc.sty)
(/usr/local/teTeX/share/texmf.local/tex/xelatex/xkeyval/xkeyval.sty
(/usr/local/teTeX/share/texmf.local/tex/xelatex/xkeyval/xkeyval.tex
(/usr/local/teTeX/share/texmf.local/tex/xelatex/xkeyval/keyval.tex)))
fontspec.cfg loaded.
(/usr/local/teTeX/share/texmf.local/tex/xelatex/fontspec/fontspec.cfg))
(/usr/local/teTeX/share/texmf.tetex/tex/latex/base/makeidx.sty)
(/Users/ycodet/Library/texmf/tex/latex/ncctools/nccsect.sty
(/Users/ycodet/Library/texmf/tex/latex/ncctools/afterpackage.sty)) 
Segmentation fault

If I disable nccsect.sty I get the same error about makeidx.sty. What  
does that message mean and what should I do? Thanks in advance.

Best wishes,

Yves