Missing button/link for downloadable product

I am setting up book products for a client at http://homeoflovechristianbooks.com. Everything works well except for the one problem which I've spent the entire day on, checking every thread and every tutorial on something that must so basic it must be my fault somehow - but I can't see it. I have two ebooks (pdf's) set up with downloadable attributes with valid filename assigned and also present on the server. I can pay for the pdf version but then when I view the order detail (view button) there is no button or link for the download in either case. The payment goes through and the order is in Processing status - but no download link in sight.

I'm having exactly the same problem. There is no download button or link.

Anybody? Help?

I may have some insight on this, after playing around some more.

On your page, where it says you can download the product, does it happen to say 0kb next to the filename? If so, you don't have a valid filename. (The filenames are case-sensitive, which is what goofed me up.) I went into the attribute controller and fixed the filename...but I had to re-purchase the product for it to work correctly.

I am having the same problem. The customer pays and gets an "order processing" message but is never taken to the download page.
Somebody please help!