I think this is a different issue than the one I encountered earlier: Errors were encountered while processing: armv7-diskmount-osmc - #3 by vinnl
So I encountered some errors when trying to upgrade to the new release using My OSMC. It told me to report it on the forum, so here we go 
The APT logs are here: http://paste.osmc.tv/ehowajaxug
The problem is you ran apt upgrade.
We block apt-get upgrade but seems we missed apt upgrade.
A backup + reinstall is probably the best approach.
You could try apt full-upgrade but I haven’t the foggiest if it will work.
It seems that at some point you may have been using the jessie-devel staging repository. You updated to some experimental (and not ready for prime time) packages on 8th September, so the issue is indeed unrelated to the other linked thread.
I still believe that unfortunately the best remedy is a reinstallation.
I would also recommend only using apt-get dist-upgrade or the My OSMC updating tool for system updates.
Sam
Hmm OK, that’s a shame, but I guess there’s not much else for me to do 
I actually tried the upgrade because the system kept hanging, so I couldn’t upgrade from My OSMC.
I’d recommend reinstalling. If you still get hangs, start a thread and we’ll look in to that separately.
Sam
Will do, thanks