Thanks to all,especially to Dekel. I've made the following:
>
> The package is called changebar.sty
> If you have file-old.lyx and file-new.lyx what you need to do is
> lyx -e latex file-old.lyx
> lyx -e latex file-new.lyx
> chbar.sh file-old.tex file-new.tex >file-diff.tex
> latex file-diff
> bibtex file-diff
> latex file-diff
> latex file-diff
> dvips file-diff -o file-diff.ps
and i'm able to use it in some files, but not in the important file. I
get the following error in the first "latex file-diff":
------
! Extra }, or forgotten \endgroup.
\@sect ...@svsec }\interlinepenalty \@M #8\@@par }
\endgroup \csname
#1mark\e...
l.428 ...les\label{roles_virtuales_ultima_online}}
?
! TeX capacity exceeded, sorry [parameter stack size=500].
\@ifnextchar #1#2#3->
\let \reserved@d =#1\def \reserved@a {#2}\def
\reserved...
l.428 ...les\label{roles_virtuales_ultima_online}}
------
It gets stuck in the "?" i have to press enter. Later it's not possible
to make "bibtex ...", with the errors: "
I found no \bibdata command---while reading file xxx
I found no \bibstyle command---while reading file xxx
(There were 2 error messages)
