Today - Why does the stack not show up?

The today stack uses PHP code, so if you add a Today stack to an already made page, it will change the file filename from index.html (or whatever your filename is) to index.php. Because this happens, you will have two index files on your server, and most servers will choose the index.html over the index.php. To fix this situation, you will need to login to your server using an FTP program and delete the index.html file.