Dear LyX, I have a problem with instant preview of equations (which I shut off). I find that defined math symbols don't show up.
If I define \newcommand\Pc{P^c} and then have an equation \Pc = P^c the left-hand side will show up in the preview, but not the right. Nothing shows up, including in the .dvi or .png files, such as 0lyxpreview.dvi 0lyxpreview7.png I also get messages such as shown below when the equation preview processes and equation (perhaps a side effect of something else) I have an x86_64 system with fedora core 6. The latex -version output is included below. I hope this is helpful. My work around is just to shut equation preview off. Thanks Brian %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% pplatex: Process input file 5lyxpreview.dvi pplatex: Copy data to 5lyxpreview.dvi dvipng warning: at (4294967070,4294967271) ignored header \special{!/[EMAIL PROTECTED](11.84)def}. dvipng warning: at (4294967070,4294967271) ignored header \special{!userdict begin/preview-bop-level 0 def/bop-hook{/preview-bop-level dup load dup 0 le{/isls false def/vsize 792 def/hsize 612 def}if 1 add store}bind def/eop-hook{/preview-bop-level dup load dup 0 gt{1 sub}if store}bind def end}. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% latex -version pdfeTeX 3.141592-1.21a-2.2 (Web2C 7.5.4) kpathsea version 3.5.4 Copyright (C) 1997-2004 Peter Breitenlohner (eTeX)/Han The Thanh (pdfTeX). Kpathsea is copyright (C) 1997-2004 Free Software Foundation, Inc. There is NO warranty. Redistribution of this software is covered by the terms of both the pdfeTeX copyright and the GNU General Public License. For more information about these matters, see the files named COPYING and the pdfeTeX source. Primary author of pdfeTeX: Peter Breitenlohner (eTeX)/Han The Thanh (pdfTeX). Kpathsea written by Karl Berry and others. [EMAIL PROTECTED] RGR]$ /usr/share/lyx-1.4.3/src/lyx --version LyX 1.4.3 (21/09/2006) Built on Jan 23 2007, 15:49:49 Configuration Host type: x86_64-unknown-linux-gnu Special build flags: pch use-ispell C Compiler: gcc C Compiler LyX flags: C Compiler flags: -O2 C++ Compiler: g++ (4.1.1) C++ Compiler LyX flags: -fno-exceptions C++ Compiler flags: -O2 Linker flags: Linker user flags: Qt Frontend: Qt version: 3.3.7 Packaging: posix LyX binary dir: /usr/local/bin LyX files dir: /usr/local/share/lyx