So, I am unable to restart Apache on my server because it is a resold version of cPanel, and the admins at my institution haven't given end users the ability to do so. In addition, files in /include/plugins are now completely locked, and I am unable to utilize chmod or chown to change perms/ownership.
Any ideas? At this point I'm wondering if it might be worth to restore from the last v1.10.4 backup I have just before upgrading, and try doing the upgrade manually, as opposed to doing it through Softaculous.