Hey, just to update, i fixed the problem…. Apparently, the PHP version: 5.4 was not enough. Upgraded to php 5.6 and problem solved!
I have this exact same error… The site was working properly and when i published it in a kinghost server for tests, the error appeared… I cant even access the wp-admin to login and try to disable the plugin… How should i proceed? Im using All-in-one version 2.3.12 and WP version 4.4.2
