On 09/15/2011 06:09 AM, Alain Didierjean wrote:
> I have 2 documents, class koma script book (in french) which I started
> writing back in 2004. Since them, I've been working on them, adding more
> chapters. They don't compile on lyx2.0x as they used to, failing on each and
> every cross reference with a message like:
>
> [18]
>
> LaTeX Warning: Reference `cha:Th=0000E9or=0000EAme-de-Herbrand' on page 19
> unde
> fined on input line 595.
>
>
> LaTeX Warning: Reference `cha:Th=0000E9or=0000EAme-de-Herbrand' on page 19
> unde
> fined on input line 595.
>
> ! Missing \endcsname inserted.
> <to be read again>
> :
> l.595 ...ref{cha:Th=0000E9or=0000EAme-de-Herbrand}
> ).
> The control sequence marked <to be read again> should
> not appear between \csname and \endcsname.
>
> ! Extra \endcsname.
> <argument> ...E9or=0000EAme-de-Herbrand\endcsname
> \space
> l.595 ...ref{cha:Th=0000E9or=0000EAme-de-Herbrand}
> ).
> I'm ignoring this, since I wasn't doing a \csname.
>
> ! Undefined control sequence.
> \is@pos@num@ #1\@nil ->\ifx \@nil #1\@nil
> \expandafter \@firstoftwo \else
> \e...
> l.595 ...ref{cha:Th=0000E9or=0000EAme-de-Herbrand}
> ).
> The control sequence at the end of the top line
> of your error message was never \def'ed. If you have
> misspelled it (e.g., `\hobx'), type `I' and the correct
> spelling (e.g., `I\hbox'). Otherwise just continue,
> and I'll forget about whatever was undefined.
>
> ! Missing number, treated as zero.
> <to be read again>
> \unskip
> l.595 ...ref{cha:Th=0000E9or=0000EAme-de-Herbrand}
> ).
> A number should have been here; I inserted `0'.
> (If you can't figure out why I needed to see a number,
> look up `weird error' in the index to The TeXbook.)
>
> ! Missing = inserted for \ifnum.
> <to be read again>
> \unskip
> l.595 ...ref{cha:Th=0000E9or=0000EAme-de-Herbrand}
> ).
> I was expecting to see `<', `=', or `>'. Didn't.
>
> ! Missing number, treated as zero.
> <to be read again>
> \unskip
> l.595 ...ref{cha:Th=0000E9or=0000EAme-de-Herbrand}
> ).
> A number should have been here; I inserted `0'.
> (If you can't figure out why I needed to see a number,
> look up `weird error' in the index to The TeXbook.)
>
> ! Extra \endcsname.
> \thevpagerefnum ...0000EAme-de-Herbrand\endcsname
>
> l.595 ...ref{cha:Th=0000E9or=0000EAme-de-Herbrand}
> ).
> I'm ignoring this, since I wasn't doing a \csname.
>
> ! Missing number, treated as zero.
> <to be read again>
> p
> l.595 ...ref{cha:Th=0000E9or=0000EAme-de-Herbrand}
> ).
> A number should have been here; I inserted `0'.
> (If you can't figure out why I needed to see a number,
> look up `weird error' in the index to The TeXbook.)
>
>
> Overfull \hbox (73.53159pt too wide) in paragraph at lines 590--596
> \T1/cmr/m/n/10.95 Jacques Her-brand (cf. [][]
> :Th=0000E9or=0000EAme-de-Herbran
> d :Th=0000E9or=0000EAme-
> []
>
> Of course, removing the cross references fix the problem... creating a new
> label and cross ref brings it back.
> - is this a known problem ?
> - any known way to fix this ?
> - any idea ?
>
This looks like it might be a form of the "active character" problem, if
you are using French. You could try switching to refstyle under
Document>Settings>Document Class.
Richard
