This really is not fair at all.
Fair or not, it was a factual statement that I am no further along in finding a solution than when I first posted the matter here.

I can understand your response in defending your product. But put yourself in my shoes. I have nothing more to work with than when I first posted my original message.

If your server returns a "page not found / 404" error, what can SetupBuilder do?
There are no "404" errors in the LOG file, however.

Here is a collection of LOG files for the past week:

http://hostsafe.com/temp/u_ex190324.zip

You won't find any 404 return codes from the server with regards to the _0000#.bin files.

So you are trying to tell me my problem is with my server returning error 404 codes and yet my server is not returning error 404 codes for the .bin files.

On 2019-03-24, the last .bin file that the stub attempted to download was _00005.bin which returned code 200. The remaining 390+ other .bin files were never downloaded despite no 404 messages occurring.

The same thing happened for 2019-03-22. _00005.bin was the last .bin attempted, and the LOG file shows code 200 was returned, not 404.

For 2019-03-20, _00003.bin and _00054.bin were the last .bin files downloaded, again, with code 200.

For 2019-03-19, _00001.bin, _00005.bin, _00053.bin and _00054.bin were the last .bin files downloaded, again, all stopping with code 200.

did you see my successful web installation of your product in your LOG?
Without knowing what day/time you downloaded/installed the app and what IP you were using, I cannot verify whether I see your attempt.