Protected Content causing an error with unprotected post categories.

I am trying to display a post category on the home page of this site that is not protected. When I enable the plugin, I get this error:

Warning: Illegal offset type in isset or empty in /homepages/10/d260600064/htdocs/wp-content/plugins/protected-content/app/model/class-ms-model-rule.php on line 493

I am using visual composer on all of the page layouts so disabling this is not an option.

Any help would be appreciated. The client would like to launch this site by Friday (tomorrow)!

Thanks