Hi Enrico, I was busy yesterday, so I'm just getting back to this now.
Here are the results of your above patch when using "branch": filename: '/tmp/lyx_tmpdir.JL6636/lyx_tmpbuf0/LaTeXConfig.tex' abstmp: '/tmp/lyx_tmpdir.JL6636' realtmp: '/tmp/lyx_tmpdir.JL6636' I'd also like to mention another bug, which I hope should be easy to fix. I've had marvelous results using SumatraPDF with \usepackage{pdfsync}. For more info, see: http://william.famille-blum.org/blog/index.php?entry=entry081007-214408 The problem is that SumatraPDF outputs the path in lowercase. The command server-goto-file-row failed until I added a sed command to the lyx server scripts which converts lyx_tmpdir.jl6636 -> lyx_tmpdir.JL6636 I believe we simply need to use a case-insensitive path comparison when running under Cygwin. Shortly, I will respond to all your suggestions from the previous thread. Thanks! -Ben