Bo Peng wrote:
options "pdftex,usenames" for beamer but still get the 'option clash
why do you need the pdftex option? It could be detected
by nearly all packages itself. And beamer itself passes it
to hyperref
use "dvipsnames,xcolor" as class options
pdftex is suggested by the error message. I have tried many options,
including yours, with no success.
it cannot work, because LyX inserts by default a
\usepackage[usenames]{color} which is
-- wrong here
-- and should always be xcolor, if really needed. Even though
a button for color/xcolor is the best way
Herbert
