Active Roles 8.3 RSTS Configuration Causing a Communication Error between RSTS and Active Roles Service

We are trying to configure RSTS in Active Roles 8.3 to use it's native API, but after creating and configuring an application in the RSTS Admin page, the RSTS tab in Active Roles Configuration Center displays an error, "A communication error occured between the Active Roles service and the RSTS service. For more information, see the Secure Token Server event log.". We know it's something with the application because after deleting it, the RSTS status returns to normal, when checking the Secure Token Server log, we can't find any errors or warnings.