Hi, John! You wrote: ... > I'm trying to find the cause of the segmentation fault you got when > uisjn contents yes . Did you try the contentsheader semantic action? Yes. In the article.sem file I sent you by private mail, it's stated: 'contentsheader para,id,contentheader'. The easiest way you can reproduce this error, is to exchange article.sem with my version. I replaced /usr/share/liblouisxml/lbx_files/article.sem with the version you got. After that, you can run xml2brl <filename> you got. Then, you get the sementation fault. Thanks Lars For a description of the software and to download it go to http://www.jjb-software.com