Hallo, everybody, I don't know why, but I am not able to use the example-environment inside the "presentation (beamer)"-class. I always get the error message "LaTeX Error: Command \example was already defined. LaTeX Error: Missing \begin{document}. Undefined control sequence."
I watched the .lyx-document with an editor but there was no example defined. Here is my .lyx-document: #LyX 2.0 created this file. For more info see http://www.lyx.org/ \lyxformat 413 \begin_document \begin_header \textclass beamer \begin_preamble \end_preamble \use_default_options true \begin_modules eqs-within-sections figs-within-sections theorems-std theorems-chap \end_modules \maintain_unincluded_children false \language ngerman \language_package default \inputencoding auto \fontencoding global \font_roman default \font_sans default \font_typewriter default \font_default_family default \use_non_tex_fonts false \font_sc false \font_osf false \font_sf_scale 100 \font_tt_scale 100 \graphics default \default_output_format default \output_sync 0 \bibtex_command default \index_command default \paperfontsize default \spacing single \use_hyperref false \papersize default \use_geometry true \use_amsmath 1 \use_esint 1 \use_mhchem 1 \use_mathdots 1 \cite_engine basic \use_bibtopic false \use_indices false \paperorientation portrait \suppress_date false \use_refstyle 0 \index Stichwortverzeichnis \shortcut idx \color #008000 \end_index \secnumdepth 3 \tocdepth 3 \paragraph_separation indent \paragraph_indentation default \quotes_language german \papercolumns 1 \papersides 1 \paperpagestyle default \tracking_changes false \output_changes false \html_math_output 0 \html_css_as_file 0 \html_be_strict false \end_header \begin_body \begin_layout BeginFrame \end_layout \begin_layout Example asd \end_layout \begin_layout EndFrame \end_layout \end_body \end_document Ain't it possible to use example inside the beamer-class? Do you have an idea? My Lyx uses a pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009/openSUSE) (format=pdflatex) . Thanks a lot for every help! Mike