On Jun 1, 2009, at 2:50 AM, Peter Hudson wrote:

The problem appears when I try to select a row. Rows are not selectable.
When I try to select a row I get the error message

NSConcreteMutableAttributedString addAttribute:value:range:: nil value

Break on objc_exception_throw and look at the bt; that should help you find the source of the exception being raised.

http://www.corbinstreehouse.com/blog/index.php/2008/08/your-most-important-breakpoint-in-cocoa/

corbin


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