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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