How do I properly ignore my base objects?

Every time I try and allow Fluent NHibernate automap my domain model I get the following error...

The entity 'BaseObject' doesn't have an Id mapped. Use the Id method to map your identity property. For example: Id(x => x.Id).

My domain model looks something like this...

Customer   (Assembly #1)
 CoreEntity   (Assembly #1)
     EntityWithTypeId<Guid>   (Assembly #2)
        Base开发者_如何学编程Object   (Assembly #2)

The only work around I've found is to call the following..

.IgnoreBase<BaseObject>()
.IgnoreBase<CoreEntity>()

Is there a better way than using IgnoreBase? Maybe in a convention or in the DefaultAutomappingConfiguration?

Thanks, Stephen

On a global scale I've found there is no way to handle situations by creating schemas. For now I've created a pre-process for unique database setup. If anyone has any ideas, I'm open to them.