Jean-Marc Lasgouttes wrote: > It means that you have mixed paragraphs which have "InTitle 1" (like > Author, Title) with others. LyX does not like that because it outputs > a \maketitle after the last title paragraph, and does not know what to > do if there is another Title after that. > I guess the problem is that I have used two Author environment to mimic this command (for MNRAS articles): \author[A. Woollatt et al.] {A.~Woollatt,$^1$\thanks{Affiliated to ICRA.} M.~Reed,$^1$ R.~Mulvey,$^1$ K.~Matthews,$^1$ D.~Starling,$^1$ Y.~Yu,$^1$ \newauthor % starts a new line in the % author environment A.~Richardson$^1$ and P.~Smith$^2$\\ $^1$Cambridge University Press, Shaftesbury Road, Cambridge CB2 2BS\\ $^2$Blackwell Science, 23 Ainslie Place, Edinburgh EH3 6AJ} which writes in the first page all the Authors, but only the short expression in brackets in the headings of the other pages. I managed to use it with two Author environment: Author* (which I use at the beginning of the document, as the usual author environment) where I write the whole expression and Author, just before the first section, with the short expression. The result is exactly what I want, but it seems a bad way to do that and probably ends up in the error I have. Do you have suggestions to translate that expression in Lyx (other than write the command in latex...)? Thanks, Stefano