Jose Quesada schrieb:
I downloaded this: ftp://ftp.springer.de/pub/tex/latex/llncs/latex2e/llncs2e.zipand uncompressed here: /usr/share/texmf/tex/latex/llncs2e
Have you afterwards updated your LaTeX paths? (via the command "texhash" or the TeXLive package manager).
If so, restart LyX and reconfigure it (menu Tools->Reconfigure). regards Uwe