Network Activation Strangeness

When trying to Network Activate, we get a fatal error message and it fails. Previously, we only had it activate on certain sites we wanted to delegate access to other campus partners. To help increase site security, we’ve turned it on across all sites. The only way I was able to accomplish this was by using an additional plugin called Multisite Plugin Manager. This plugin allowed me to activate across all sites and also, strangely, also gave me access to the network settings. I was then able to set global options and set exceptions on a few sub-sites that needed custom access settings. But logging in seems very sluggish and some error log entries seemed to point to the way we have Authorizer installed as a contributing factor. Also, having activated the plugin as described above, on every sub-site, we get an admin error message stating: “Can’t reach CAS server. Please provide accurate CAS settings if you intend to use it.” But we do have the CAS setting set and people can log in (albeit very slowly). I had tried to deactivate and uninstall/re-install the plugin unsuccessfully. I even purged the database of any auth_settings entries.