ASP.Net MVC 2 / EF 4 Reference Issue
- by Eric J.
My ASP.Net MVC 2 project references a Domain project where POCO business objects are defined and a Data project where EF 4 POCO persistence is implemented.
Things were running well until I had a little fussiness with my version control provider (rollback to previous version left me with merge conflicts).  Now, upon launching the MVC 2 project, I get a runtime error:
  The type
  'System.Data.Objects.DataClasses.IEntityWithKey'
  is defined in an assembly that is not
  referenced. You must add a reference
  to assembly 'System.Data.Entity,
  Version=4.0.0.0, Culture=neutral,
  PublicKeyToken=b77a5c561934e089'.
However, every project references System.Data.Entity (same version).
If I remove the reference to System.Data.Entity from the MVC 2 project, I get the same message as a compile-time error.
I'm pretty sure something got messed up when I had the version control issue, but really not sure where to look for this one.