I'm wondering whether others have had this error in natty (ubuntu) Due to some error in it, the layout file:
AGU-article could not be loaded. A default textclass with default layouts will be used. LyX will not be able to produce correct output. Also, when I try to open a REVTeX4 template, I get The selected document class true requires external files that are not available. The document class can still be used, but the document cannot be compiled until the following prerequisites are installed: revtex See section 3.1.2.2 (Class Availability) of the User's Guide for more information. Thanks, Art