Compatibility with Ignition 8's New Project Inheritance
New in Ignition 8 is the ability to configure Ignition Project inheritance. In previous versions of Ignition, there was a concept of a "Global" project, wherein shared resources like shared scripts and templates resided, such that all projects could access them. This "Global" project is also where much of the configuration of the Sepasoft modules was accomplished, including the MES Production Model, Web Services Configurations, and more.
In Ignition 8, however, Inductive Automation has done away with the "Global" project. For more details on the new Project Inheritance functionality, please review this video at Inductive University:
https://www.inductiveuniversity.com/videos/project-inheritance/8.0/8.0
As part of our 2.80.0 update, we have added compatibility with this new Project structure. When a user installs the 2.80.x versions of the MES modules, whether via upgrade or fresh install, a new Ignition Project is automatically created, called MESGateway. By default, all configuration of the Sepasoft resources is accomplished there, including changes to the MES Production Model, Web Services Configurations, etc. Other projects can use the components, scripting functions, tags, and everything else the Sepasoft modules have to offer, but configuration of the Sepasoft modules is only performed in the Configuration Project.

You can designate another project as your MES Configuration Project, by navigating to MES Settings on your Gateway's Config tab:

The same is true for the Web Services Module. Simply navigate to Config → Web Services Module → Settings to change the Configuration Project.