Zubaz, I will admit that this reply was prompt. However often I do not receive prompt replies.
I have re-replied to Melissa's e-mail that she sent me with the salient information.
Zubaz, in regards to this specific issue.
Your software was making me download a 4.62 Gigabyte file. After that LARGE file had been completely downloaded it was doing an MD5 check. Which failed... Twice.
As I was unable to continue wrestling with your software I purchased the product from another vendor. Specifically Direct2Drive.com
There are two ways you could resolve this issue in the future.
1) Work BitTorrent technology into your downloads. BitTorrent does CRC checks on each piece as it is downloaded, preventing the issue as outlined above. Additionally this would provide you with the ability to give people faster downloads. I was only able to download from Impulse at 1.85M/sec. I have a 50Mbit internet connection. Direct2Drive.com sent me the files at 3M/sec. Especially since you can 'seed' the files from multiple geographic locations it would provide you a much more robust network with which to deliver content to your customers.
2) If you don't want to go full on BitTorrent with your software, at least have it do CRC checks on smaller pieces of the file instead of waiting for it to tell me the 4.62GB of data I just spent 40 minutes downloading is invalid.
Thanks,
Matt