It's probably unrelated, but why are you using NSArchiver? There's almost no 
need to these days, and it's more-or-less deprecated (not available on the 
iPhone for example).

On 14 Dec 2009, at 12:41, Richard Somers wrote:

> I have a Core Data document based application.
> 
> Saving the file as XML or SQLite works fine.
> 
> Saving as binary results in an error: *** -[NSKeyedArchiver 
> encodeValueOfObjCType:at:]: this archiver cannot encode structs.
> 
> The struct in question is a transformable attribute using a custom value 
> transformer.
> 
>     - (id)transformedValue:(id)value
>     {
>          return [NSArchiver archivedDataWithRootObject:value];
>     }
> 
> No where in my code do I call NSKeyedArchiver.
> 
> Why does the core data framework work fine saving as XML or SQLite but not 
> binary?
> 
> --Richard
> 
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