Sign up ×
TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. It's 100% free, no registration required.

I'm using LyX portable on windows, and I get this message

the selected document class article(hebrew) requires external files that are not avialable. ... the following prerequisites are installed: article.cls theorem.sty

I can't convert lyx to pdf. i have seen an answer to this question, but not for LyX portable.

share|improve this question
Welcome to! – hpesoj626 Mar 18 '13 at 13:42
I write my thesis in Hebrew using XeLaTeX and the bidi package (היי, נעים להכיר ☺), and if it is possible for you to use XeLaTeX+bidi, I recommend it wholeheartedly. Everything works so much smoother, easier and with a greater flexibility in comparison to (pdf)LaTeX. – Júda Ronén Dec 15 '14 at 18:35

1 Answer 1

If you are using Ubuntu or any linux distro try to do these:

  1. Search for texlive-latex-extra AND tex-math-extra AND texlive-lang-hebrew in any package manager and install them
  2. In LyX press Tools>Reconfigure
  3. Restart LyX
share|improve this answer
If Fedora or another RPMy distribution, yum install 'tex(missing.sty)' gets the missing piece(s) and dependencies. – vonbrand Mar 18 '13 at 19:58

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.