Nintex Best Practices: Naming variables

When developing applications using C# or JavaScript there are naming conventions for variables and other artifacts such as classes. This makes it easier to understand code from other developers. 

But what about variables in a Nintex Workflow?

Microfeed not working on Team Site - Internal error code 54

I installed a SharePoint 2013 farm using AutoSPInstaller. As usually the installation worked well. I then created a new Team Site site collection. The Newsfeed WebPart came up with an error message:

The operation failed because an internal error occurred. Internal type name: Microsoft.Office.Server.Microfeed.MicrofeedException. Internal error code: 54. Contact your system administrator for help in resolving this problem.