How To Create Edmx File In Visual Studio 2019

I have been working on this and searching for an answer the past couple of days. I have deleted and recreated the edmx files many times rebuilding and restarting etc. trying to find a magic combination. The files below are created, but not the .tt files.

Double clicking the edmx file returns one of these two messages.

The .tt files can be made, but only from the designer, which won't open. I did this last week and everything was working Friday. Monday I needed to make some changes and now the edmx is incomplete and nothing will work anymore.

Microsoft Visual Studio Community 2019 Preview
Version 16.7.0 Preview 3.1
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Entity Framework 6 Power Tools 0.9.2
Preview of useful design-time DbContext features, added to the Visual Studio Solution Explorer context menu.

When right-clicking on a file containing a derived DbContext class, the following context menu functions are supported:

View Entity Data Model (Read-only) - Displays a read-only view of the Code First model in the Entity Model Designer.
View Entity Data Model XML - Displays the EDMX XML representing the underlying Code First model.
View Entity Data Model DDL SQL - Displays the DDL SQL corresponding to the SSDL in the underlying EDM Model.
Generate Views - Generates pre-compiled views used by the EF runtime to improve start-up performance. Adds the generated views file to the containing project.

When right-clicking on an Entity Data Model (*.edmx) file, the following context menu function is supported:
Generate Views - Generates pre-compiled views used by the EF runtime to improve start-up performance. Adds the generated views file to the containing project.

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