For a bug to be identified and fixed, it must be reproducible. Simply running Alt.Binz 0.27.2 on Vista does not reproduce this bug, so it must be something on your system, which you'll need to track down yourself. Vista shouldn't fail without at least some report in the event log.
Follow some basic trouble-shooting steps like: temporarily disabling all applications you don't need while downloading, disable antivirus, firewall, Windows Defender, UAC, etc.. If you don't crash you know it's one of those, re-enable each of them until you identify the culprit. You could also install some tools like Process Monitor and Process Explorer to get more info on what's happening on your system when downloading.