I'm using Entity Framework 4 with the Model First approach.

I started the project, designed the entities and generated the database. Everything worked fine.

Then I needed to go back and add another entity to my model. However, as I drag an entity to the EDMX I get this error:

enter image description here

Alright! I just need to map Entity1 to a table.. But hey! I'm using Model First approach, I expect it to create the table for me when I generate the DDL.

How do I work around this error?

.net entity-framework entity-framework-4
Edit
Report