Core Data Error Message: binding not implemented for this SQLType 7

The below ex开发者_开发百科ception is thrown on the iPhone simulator when attempting to save a Core Data SQLite store after deleting existing records using [managedObjectContext deleteObject:object];

NSInternalInconsistencyException, reason: binding not implemented for this SQLType 7

The entity for the records being deleted consists of just strings, ints, bools, and doubles. This is only an intermittent problem.

What does this error mean?

This error was caused by an incorrect mapping model from one core data model to the next, and would only happen when values were changed in the incorrectly mapped table/column of the model.

Looks like you are missing a quote (') -- the error is showing 7'