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Fixing: Cannot merge multiple root entity source tables into one destination entity root table
So I have an app called TimeTag that uses Core Data and I needed to migrate to a new core data model version. It uses a UIManagedDoc to manage the core data file (rather than having everything dumped in the AppDelegate). I did the usual first steps:I selected my ModelName.xcdatamodelId in my project list and went up to "Editor" and selected "Add Model Version"I had it inherit from my current model versionThen I selected the ModelName.xcdatamodelId file in the project listing again, and went over ......

Posted On Friday, August 9, 2013 3:15 PM

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