I recently installed lyx on a new computer. And it seems that I can't preview the pdf in adobe reader or sumatra. The yap software is invoked to preview the pdf. I tried to add the adobe path, change the preview to AcroRD32 or Summatra. I even re-installed lyx. Nothing works so far. This is really bothering me since I need to adjust the look of the paper. With yap, I can't really see how the paper looks like now.
-- Yan Song PhD Department of Economics, McGill University Cell phone: 514-5496070 Personal Website: yansong.org
