Fatal error: Cannot use string offset as an array in

Fatal error: Cannot use string offset as an array in /home/content/13/9571013/html/dev3/wp-content/plugins/marketpress/marketpress-includes/marketpress-ms.php on line 220

I was setting up marketpress through the network setup interface. I had set global cart to yes, then clicked saved...then that happened. That was the only setting I made, and then the above error showed up.

I deleted the marketpress folder through FTP and re-uploaded it again. The error did not go away. Probably saved to the wp options table or something. First time moving away from woocommerce to marketpress to setup an etsy style store and it's such an unbelievable pain!