Unfortunately, it’s not working for many of us.
Taking a close look at Backup Creator. Seems reasonably priced and I know someone who’s used it to backup several sites successfully.
Make sure any solution you look at can handle larger sites. For instance, there are products that have limits on how large a site it can handle. Also be careful when dealing with 32 bit servers as they can’t handl files larger than 4 gig at a time.
I’m having the same problem. When the author won’t respond, it usually means they’ve decided the trouble supporting the product is not worth what they’re making from it. This is endemic to Open Source. In the end, you always get what you pay for. I’d suggest buying a paid product an moving on.