I don't have time to go much into this before I go off for the
holiday, but one thing:

On Wed, Nov 26, 2008 at 5:26 PM, Graham Cox <[EMAIL PROTECTED]> wrote:
> For images from a file, I am thinking I can copy the
> original file into my package and simply archive a relative path to it.

If you create an image with -initByReferencingURL:, the URL is all it
will archive.  The 'reference' here means that the app is permitted to
assume image remains accessible at the URL.  If you use
initWithContentsOfURL:, the app is contractually obligated to read the
data in immediately and no longer go back to the URL.

-Ken
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