Warning notices after upgrading to DevKit 1.5.1

Hi there. 

I upgraded the DevKit plugin on one of my websites and I got a bunch of PHP warnings. 

I tried downgrading to 1.5.0, cleared caches, resaved permalinks but the errors are still there. 

This is what I am getting: 

Warning: Constant DISALLOW_FILE_EDIT already defined in/var/www/anelixisnet.com/wp-config.phpon line80

Warning: Constant E_ALL already defined in/var/www/anelixisnet.com/wp-config.phpon line94

Warning: Constant E_ERROR already defined in/var/www/anelixisnet.com/wp-config.phpon line95

Warning: Constant E_WARNING already defined in/var/www/anelixisnet.com/wp-config.phpon line96

Warning: Constant E_PARSE already defined in/var/www/anelixisnet.com/wp-config.phpon line97

Warning: Constant E_NOTICE already defined in/var/www/anelixisnet.com/wp-config.phpon line98

Warning: Constant E_CORE_ERROR already defined in/var/www/anelixisnet.com/wp-config.phpon line99

Warning: Constant E_CORE_WARNING already defined in/var/www/anelixisnet.com/wp-config.phpon line100

Warning: Constant E_COMPILE_ERROR already defined in/var/www/anelixisnet.com/wp-config.phpon line101

Warning: Constant E_COMPILE_WARNING already defined in/var/www/anelixisnet.com/wp-config.phpon line102

Warning: Constant E_USER_ERROR already defined in/var/www/anelixisnet.com/wp-config.phpon line103

Warning: Constant E_USER_WARNING already defined in/var/www/anelixisnet.com/wp-config.phpon line104

Warning: Constant E_USER_NOTICE already defined in/var/www/anelixisnet.com/wp-config.phpon line105

Warning: Constant E_STRICT already defined in/var/www/anelixisnet.com/wp-config.phpon line106

Warning: Constant E_RECOVERABLE_ERROR already defined in/var/www/anelixisnet.com/wp-config.phpon line107

Warning: Constant E_DEPRECATED already defined in/var/www/anelixisnet.com/wp-config.phpon line108

Warning: Constant E_USER_DEPRECATED already defined in/var/www/anelixisnet.com/wp-config.phpon line109

Please have a look.

Thanks!

purchase_id:

1405012229555450010037629