BibTeX, biblatex and biber ⇒ Citation causes Error about undefined Control Sequence

[mdkurtz]

Hi,

I am having trouble using BibTeX for my report. My main file is called "Report.tex". Within this directory I have another directory with additional source files. I am including them in my report using \input{introduction.tex}. Now within introduction.tex, I am trying to do \cite{ref_from_bib}. I am doing LaTeX, BibTeX, LaTeX, LaTeX, for my build (using Kile), and I get the error:

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finished with exit code 1
./Chapters/Introduction.tex:13:Undefined control sequence

mainly from \cite{ref_from_bib}
However, it does actually include the reference when I open the final result. I would just like to know why there is an error.

In "myRefs.bib" I have this:

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@Book{ref_from_bib,
  author = {J. D. Anderson},
  title = {Modern Compressible Flow},
  edition = {2nd},
  publisher = {McGraw-Hill},
  year = 1990
}

Thank you very much for the help!

Mike


PS: I am new to the forum, so if I left out any information, ask and I will let you know.

EDIT: Upon further trials, changing the document class to report gives no errors with the same setup. Is there something in the bibliography style or class file I could alter to make it work? Thanks again!

[Stefan Kottwitz]

Hi Mike,

welcome to the board!

In the file Introduction.tex you wrote \ref{Strehlow:84bk}, I guess you meant \cite{Strehlow:84bk}. Nevertheless, it's unclear. Please post the complete error message, i.e. which control sequence is said to be unknown, or post the .log file as attachment.

Stefan

PS: (In German - Hilfe auf deutsch: Undefined control sequence - wie finde ich heraus, was fehlt?

[mdkurtz]

Sorry, that was the incorrect introduction file.

Its fixed now, and I will include the log file to this post.

[Stefan Kottwitz]

So the complete error message is:

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! Undefined control sequence.
<argument> ...citeb \@extra@b@citeb }\citenumfont 
                                                  {\NAT@num }\hyper@natlinkend 
l.13 mainly from Strehlow\cite{Strehlow:84bk}
                                             , which is summarized in this p...
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.

This error did not occur when I tested it. Furthermore, I noticed in the .log file that you are using a very old version of natbib

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/home/mdkurtz/texmf/tex/latex/natbib.sty
Package: natbib 1998/07/14 6.8c (PWD)

The current version is 2010/09/13 8.31b. I recommend that you update your version.

If an update would be impossible, a workaround could be

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\newcommand*{\citenumfont}{}

in the preamble.

Stefan

[mdkurtz]

Stefan,

Thank you very much for your clear and concise help. Once I updated my natbib.sty the error went away.

Regards,

Mike