Hi, I've Googled the archives for this problem, but the only time it came up was when the file was already open in Acrobat Reader, which has a write lock on the output file, so of course pdflatex fails.
Anyway, I've tried File > Export > PDF/PDF (pdflatex)/DVI, but it always gives me the error "Resulting file is empty". I have miktex installed, and the previous intallation of LyX (the unofficial LyX-win32 1.3.5) worked fine. I can, however, export to LaTeX. Running pdflatex from cmd works, and I've ensured that C:\texmf\miktex\bin is in the path_prefix. Same errors when I use View menu. What am I missing? Thanks in advance for any help.