Bryce Ready schrieb:
TextClassList::Read: unable to find textclass file `'. Exiting. CompletedAny ideas?
Could have many reaons, also some of your MiKTeX installation. You can try to uninstall LyX 1.5.1 completely and then reinstall it using this installer: http://wiki.lyx.org/Windows/LyXWinInstaller I hope this helps. regards Uwe