Shmuel,
Could you capture a “tail -f /var/log/messages” to a file either using a terminal program or “tail -f /var/log/messages > /var/config/upgrade.log” during an upgrade attempt. Then file a Multitech Support Portal case at https://support.multitech.com and attach the captured logging to the case?
I would like to see what the logs are saying during the upgrade attempt. I have not heard of this type of thing happening much since we fixed a memory leak in the Conduit API back on 1.2.1.
Jeff