This is pdfeTeX, Version 3.141592-1.21a-2.2 (Web2C 7.5.4) entering extended mode (./tide_example.tex LaTeX2e <2003/12/01> Babel and hyphenation patterns for american, french, german, ngerman, b ahasa, basque, bulgarian, catalan, croatian, czech, danish, dutch, esperanto, e stonian, finnish, greek, icelandic, irish, italian, latin, magyar, norsk, polis h, portuges, romanian, russian, serbian, slovak, slovene, spanish, swedish, tur kish, ukrainian, nohyphenation, loaded. (/usr/share/texmf-tetex/tex/latex/base/article.cls Document Class: article 2004/02/16 v1.4f Standard LaTeX document class (/usr/share/texmf-tetex/tex/latex/base/size10.clo)) (/usr/share/texmf/tex/latex/misc/hevea.sty ! LaTeX Error: File `comment.sty' not found. Type X to quit or to proceed, or enter new name. (Default extension: sty) Enter file name: ! Emergency stop. l.15 \newif \ifhevea\heveafalse^^M No pages of output. Transcript written on tide_example.log. **** Errors occured while generating file ****: tide_example.pdf