[OS X TeX] MacTeX 2008 and exam.cls

Todd Hufnagel hufnagel at jhu.edu
Sat Sep 13 20:50:06 EDT 2008


I recently downloaded and installed TeXLive-2008 (from MacTeX-2008),  
and quickly ran into a problem. When compiling documents using  
exam.cls, I get the following error:

> This is pdfTeXk, Version 3.1415926-1.40.9 (Web2C 7.5.7)
> [...]
> (/usr/local/texlive/2008/texmf-dist/tex/latex/exam/exam.cls
> Document Class: exam 2008/07/19 Version 2.3 by Philip Hirschhorn
> (/usr/local/texlive/2008/texmf-dist/tex/latex/base/ifthen.sty)
> (/usr/local/texlive/2008/texmf-dist/tex/latex/base/article.cls
> Document Class: article 2005/09/16 v1.4f Standard LaTeX document class
> [...]
> ! Undefined control sequence.
> \@gtempa ...ifnum \@ne =\@ne \fi \if at printanswers
> Process aborted
>          \relax \TE at setvaltrue \els...
> l.17 \ifthenelse{\boolean{@printanswers}}

The offending bit of my source file is:

> \printanswers
> \addpoints
> \begin{document}
> % The title block depends on whether we are printing the original  
> quiz, or the solutions:
> \ifthenelse{\boolean{@printanswers}}

My first thought was that ifthen.sty was not being located, but the  
log clearly shows that it is. So I don't understand why I'm getting  
the "undefined control sequence" error.

Interestingly, the same source file compiles without complaint using  
the TeXLive-2007 distribution (many thanks to the developers for  
making it easy to switch back).

Any suggestions would be appreciated.


Todd Hufnagel

Todd Hufnagel
Department of Materials Science and Engineering
Johns Hopkins University
102 Maryland Hall
3400 N. Charles Street
Baltimore, MD 21218-2681
410-516-6277/ Fax 410-516-5293
hufnagel at jhu.edu

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