LyX seems to be taking the "printing command" and "file name extension" options (in the Preferences dialog box) as if they were only one option. When you save or load your preferences, both take the same value.
LyX 1.3.0 of Thu, Jan 30, 2003 Built on Feb 13 2003, 03:52:24 Configuration Host type: i686-pc-linux-gnu Special build flags: C Compiler: gcc C Compiler flags: -g -O2 C++ Compiler: g++ (2.95.4) C++ Compiler flags: -O -Wno-non-template-friend -ftemplate-depth-30 Linker flags: Frontend: qt Qt version: 2.3.1 LyX binary dir: /usr/local/bin LyX files dir: /usr/local/share/lyx