Help with downloads

[HeleneWallis]

I set up a downloadable product months ago and it's been working fine ever since. Now I need to add several more and I'll be darned if I can figure out what I did before. I've added one of them as a new product and have set its attributes to exactly the same as the previous one, but it isn't showing up in the Download Manager. It does appear in the product list and you can buy it, but you don't get the option to download it. What am I missing?

[HeleneWallis]

Never mind. For pete's sake, my brain is totally useless today. I failed to specify the file name in the attributes. It's working now.