Thanks for the reply. I was checking the installation in another computer and it didn't have stdtheorem.inc and it still works!!! I actually followed the instructions in this link to make the articletheorem.layout file
http://www.mail-archive.com/[email protected]/msg21256.html I tried googling for the stdtheorem.inc file and that also yielded nothing:( I also reinstalled Lyx1.3.x and the layout seems to work fine without the stdtheorem.inc file!!!
