> > I can't see pdf because lyx always give me the same error: > > "\lyxframeend > > {} > > The control sequence at the end of the top line > > of your error message was never \def'ed. If you have > > misspelled it (e.g., `\hobx'), type `I' and the correct > > spelling (e.g., `I\hbox'). Otherwise just continue, > > and I'll forget about whatever was undefined." > > I have had the same problem. It seems that lyx reports other errors within the frame, such as some other undefined control sequence, as a problem with \lyxframeend.