The problem was I had .NET 3.5 selected as the target platform.
Now I'm able to add the "Create manager class" task to the queue, as you can see at one of the attached pics.
But when I run the generator, there are some errors :
Task group: Manager Templates
Task group: Create Directories
Task: CoreManagerBaseDirectoryCreator
Task: CoreManagerDirectoryCreator
Task: CoreDirectoryCreator
Task group: Create Manager Classes
Task: PrefectPathElementCollectionGenerator
Could not find template 'PrefectPathElementCollectionTemplate'. It is not defined in the used templatebindings or is empty. It can be it's not defined for the current database (e.g. stored procedure templates for SqlServer CE)
Task: EntityManagerBaseGenerator
Could not find template 'EntityManagerTemplate'. It is not defined in the used templatebindings or is empty. It can be it's not defined for the current database (e.g. stored procedure templates for SqlServer CE)
Task: EntityManagerBaseGenerator
Could not find template 'EntityManagerBaseTemplate'. It is not defined in the used templatebindings or is empty. It can be it's not defined for the current database (e.g. stored procedure templates for SqlServer CE)
Task: ManagerBaseGenerator
Could not find template 'ManagerBaseTemplate'. It is not defined in the used templatebindings or is empty. It can be it's not defined for the current database (e.g. stored procedure templates for SqlServer CE)
I'm using Oracle.