That’s a bummer. I really don’t want to trigger whatever bug is affecting updates. Did this happen with updates in the past? IMO this is serious issue that should be investigated.
This kinda speaks a lot about quality of firmware, at least because of multiple reports from different users in this thread http://forum.mikrotik.com/t/v6-40-5-current/113795/1
I can’t imagine going through netinstall procedures, being unable to use full backups of configs, etc, if I had multiple MikroTik devices installed for my customers…