Disappointing, otherwise, great download manager. ONE line of code in the C language will perform a case conversion on a string problem solved. The bug is so obvious the program is comparing what the user enters directly to the hash value it calculated, as a string comparison.

And all because of simple error between using Capital vs lower case letters. For a real large file (think Apple OS updater), this is a lot of wasted time and bandwidth. And honestly, for a file download program, getting hash value comparison is pretty essential, if you're going to even offer that functionality, it has to be right. IMO, this is a critical bug, because a user may try to re-download a file over and over and over, thinking he has a corrupted file, when in fact the file is fine.

If you enter the hash value using lower case letters, the comparison returns valid (obviously, the hash value you enter must be correct, capitial or lower case). If you enter a hash value to compare against using CAPITAL letters, the file integrity will fail with the message 'Verification Failed', giving the user the impression that the download is no good. The letters A through F, if any in the hex number are all lower case. If you do a file integrity hash value check, FDM computes the hash and displays it. I typically don't like to publicly shame a company on a forum for bugs, but this bug is critical IMO and I reported over a year ago (as in submitted bug report ticket #272855).