Cornerstone Plugin Deactivated itself? Fatal Error

[Kyle_Andrew]

I just noticed that in the builder I can no longer load previews of either content or headers/footers. I started to go through the usual process of deactivating plugins ETC and noticed that for some reason cornerstone itself was deactivated. I am getting the following error when attempting to activate it:

Plugin could not be activated because it triggered a fatal error.

Fatal error: Cannot redeclare class Cornerstone_Plugin_Base in /home/fortyeightlong/48long.com/wp-content/plugins/cornerstone/includes/utility/plugin-base.php on line 6

I upgraded to 2.1.7 only yesterday I believe and I suspect this has been a problem since.

Can you please tell me how to fix this? I was planning on launching this website today.

[Kyle_Andrew]

Additionally, I am from time to time getting this error when attempting to access other pages in the backend like the dashboard, or posts pages etc:

Warning: First parameter must either be an object or the name of an existing class in /home/fortyeightlong/48long.com/wp-content/themes/pro/framework/functions/global/helpers.php on line 137

I am running PRO on Wordpress 4.9 if that helps

[thai]

Hi There,

If you’re using Pro theme so you don’t have to activate the Cornerstone plugin anymore.

The Cornerstone plugin has been built in the Pro theme.

Regards!