Hi Basma, In my experience, Adobe Reader is almost always the PDF viewer of last resort when using LyX – on Mac, Windows or Linux.
According to this page: http://tex.stackexchange.com/questions/43057/macosx-pdf-viewer-automatic-reload-on-file-modification you should be able to just use the default OS X Preview program, but there are other suggestions in the answers that you could try (e.g. Skim, TeXShop). Cheers Shay On 6 August 2014 18:33, Basma <basm...@gmail.com> wrote: > Hello LyX people, > > I am new user to LyX (2.1.1) on Mavericks, facing a rather basic problem. > I compile using ps2pdf or pdflatex with the PDF opening in the chosen > viewer. > If it remains open, any changes are not reflected using the update > function. > The generated PDF always needs closing, then viewing again. > The OS default PDF viewer is Adobe which may have been the issue. > I changed it to Skim & Previewer for ps2pdf & pdflatex. > Still no updating. > The non-updating bit applies to other formats as well (tried DVI, EPS). > Successful Preview of format:PDF (ps2pdf) is displayed when viewing. > Successful export to format: PDF (ps2pdf) is displayed for updating. > > A log file is available if needs be. > > > Thanks in advance. > > Basma > > >
