I recently installed this iso as a VirtualBox Guest, sparkylinux-3.6-x86_64-mate and also the xfce one.
The host machine was Windows 8.1, and when I tried to run the System Upgrade icon. The whole thing went into a loop and just kept going round and round.
I thought it may have been a problem with my desktop, so tried the image on my laptop, Windows 7 which I knew everything was working just fine.
The same issue, so I fired up a terminal and ran the apt-get upgrade from the CLI so I could see the messages and errors more clearly.
I found this topic: http://sparkylinux.org/forum/index.php?topic=2837.0
This allowed me to tun the upgrade successfully.
Now have another issue where by I select the System Upgrade icon, a terminal shell launches and get this new error message:
Unable to find a shell
Any thoughts as cannot see or figure how to change the terminal for this?