Just upgraded a site from 2.5.5 to 2.8.1 with the plans of adding MSM once 2.8.1 was installed. I successfully upgraded to 2.8.1 and when I go to turn on MSM it kicks me out of the CP with the following error:
An Error Was Encountered Site Error: Unable to Load Site Preferences; No Preferences Found
When I set
$config['multiple_sites_enabled'] = "n"; I'm able to log back in with no errors. Not sure where to start troubleshooting?