Hi Nick,

When you return your item to the table column, I believe this is setting the cell's object value to this item. The object value of an NSCell needs to conform to the NSCopyingProtocol.
If you implement the method:

- (id)copyWithZone:(NSZone *)zone

in HDIR to return a copy of the object, you won't get this error anymore.

Best,
Cathy


On Apr 5, 2008, at 10:25 AM, Nick Rogers wrote:

Hi,
when i return the item for a tableColumn in NSOutlineView, the following error is there:

*** -[HDIR copyWithZone:]: selector not recognized [self = 0x39b670]

Here HDIR is the item that i return for a particular tableColumn of outline view.
HDIR also inherits from NSObject.

WIshes,
Nick

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