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Re: Core Data versioning woes

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Re: Core Data versioning woes

Subject: Re: Core Data versioning woes
From: Graham Perks <email@hidden>
Date: Sun, 10 Aug 2008 09:29:44 -0500

I've got a little further. I made both model versions identical. Then reset the file back to the old version. Doc opened OK. Add one attribute to the file, reset the file, and I now get:

Error Domain=NSCocoaErrorDomain Code=256 "The file could not be opened."

from initWithContentsOfUrl:... Not very useful. Nothing from Core Data about why the file couldn't be opened. I do get the "blah.new" file adjacent to my data file, so I know migration has been attempted.

I swear Core Data costs me as much time as it saves me :-)

Graham.

On Aug 10, 2008, at 12:36 AM, Graham Perks wrote:

Wow, versioning looks SO much better in 10.5. I had my own code for 10.4, I am glad to delete it.

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  >Core Data versioning woes (From: Graham Perks <email@hidden>)




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