This is a clear indication that your BookMark class does not conform
to NSCoding. Check the docs on what NSCoding is and how to use it.
If you implement the two required methods (initWithCoder: and
encodeWithCoder:), your code should work just fine.
Dave
On May 8, 2009, at 8:35 AM, jon wrote:
NSData blew up because: *** -[BookMark encodeWithCoder:]:
unrecognized selector sent to instance 0x1f900a40
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