Hi with your version test_media9.lyx i got the same three Errormessages.
if i make sudo tlmgr info media9 theres the output: package: media9 category: Package shortdesc: Multimedia inclusion package with Adobe Reader-9/X compatibility. longdesc: The package provides an interface to embed interactive Flash (SWF) and 3D objects (Adobe U3D & PRC), as well as video and sound files or streams in the popular MP4, FLV and MP3 formats into PDF documents with Acrobat-9/X compatibility. Playback of multimedia files uses the built-in Flash Player of Adobe Reader and does, therefore, not depend on external plug-ins. Flash Player supports the efficient H.264 codec for video compression. The package is based on the RichMedia Annotation, an Adobe addition to the PDF specification. It replaces the now obsolete movie15 package. installed: Yes revision: 29192 cat-version: 0.24 cat-date: 2013-02-21 10:49:40 +0100 cat-license: lppl1.3 collection: collection-latexextra I can see, that the package is installed. Hm, very strange!!! uwe Am 02.03.2013 um 09:06 schrieb Scott Kostyshak <skost...@princeton.edu>: > On Sat, Mar 2, 2013 at 2:43 AM, Uwe Ade <uwe....@gmx.de> wrote: >> Hi Scott, >> >> unfortunately not. I changed the Latex Preamble as suggested. After >> recompiling there are three Errormessages >> >> undefined control sequence >> >> } >> 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. >> >> >> Latex Error: Missing:\beginn{document} >> } >> You're in trouble here. Try typing <return> to proceed. >> If that doesn't work, type X <return> to quit. >> >> undefined control sequence >> >> \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. >> >> >> some specs: I am working on a macbook, with lx 2.0.4 with TexLive-2012 intel >> 64. > > Maybe you have to install the package? > The following LyX file works for me (all I did was add that line to > the preamble): > https://www.dropbox.com/s/3mudb8pt2yj2j01/test_media9.lyx > > Scott