On 01/10/2015 10:44, Joseph Wright wrote: > \ifx\documentclass\@undefined > \input ltluatex.sty > \else > \RequirePackage{ltluatex} > \fi Small correction the support for plain TeX is in ltluatex.tex so the above should be \ifx\documentclass\@undefined \input ltluatex \else \RequirePackage{ltluatex} \fi David ________________________________ The Numerical Algorithms Group Ltd is a company registered in England and Wales with company number 1249803. The registered office is: Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom. This e-mail has been scanned for all viruses by Microsoft Office 365. ________________________________