The Error message "Failed to add Class "YourClassName". Failed to automatically hot reload the "YourProjectName" module." appears when adding a class to a C++ project

Edit MattK: This is UserWidget specific. If we don't want users to extend this class we should figure out a way to prevent that in our wizards

When trying to add a C++ class to a project the following error is received :

"Failed to add Class "YourClassName". Failed to automatically hot reload the "YourProjectName" module."

1. Open a new C++ project
2. Add Code to project
   File > Add code to project
3. Click "Show all Classes"
4. Type "WidgetBlueprint"
5. Select widgetblueprint (path: BlueprintCore > Blueprint > WidgetBlueprint)
6. Name the class "HudWidget"
7. Press the Create Class button
8. Notice the error mentioned in the description above

i have this problem UE4CC-Windows-58DC12AF4B97F057BD108FBFF569B2E9_0000

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