Forgive the basic question, but do you still have the old version of the model 
present in your versioned model?

On 2013-05-28, at 10:18 PM, Rick Mann <rm...@latencyzero.com> wrote:

> In the past, Core Data was able to deal with a simple addition of a property 
> to an Entity. Now, every time I add a property, I get "Can't find model for 
> source store" errors during auto update.
> 
> I'm using the following options when creating the persistent store 
> coordinator:
> 
>       NSDictionary* options = @{ NSMigratePersistentStoresAutomaticallyOption 
> : @true,
>                                       NSInferMappingModelAutomaticallyOption 
> : @true };
> 
> Am I doing something wrong?
> 
> Thanks,
> 
> -- 
> Rick
> 
> 
> 
> 
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