On Thu, Sep 15, 2011 at 9:59 AM, Wolfgang Engelmann
> Thanks, Liviu, but http://www.lyx.org/trac/ticket/7121#comment:1
> leads to a mail without a reference for the source. Do you know it?
Yes. Download the src tarball of LyX , unpack and navigate to
/lib/lyx2lyx/, then copy this folder (entirely) to the system dir of
your LyX installation. On Linux this would usually be
/usr/share/lyx/lyx2lyx. Make sure to first (re)move the existing
lyx2lyx folder. A word of caution: this is a hackish approach that
should work in many cases, but if you have have issues in the distant
future with opening LyX files this would be your culprit; then you'd
either install latest LyX, or repeat this procedure.