MIT-Mobile/MIT-Mobile-for-iPhone — pull request #77 by markdintrepid (2014-06-26 20:39:12+00:00)
Title: Persistent store migration

Result of apparent Core Data issue: http://stackoverflow.com/q/10940545. Core Data is unable to perform an automatic, lightweight migration when the project contains multiple data models.

Solution: recreate the persistent store using current managed object models and old persistent store metadata. This measure is only taken if existing store fails to load.