<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Graham,<div><br></div><div>Thx!</div><div><br></div><div>Deleting (renaming) the plist did the trick! I didn't think to look for<b> net.apptree</b> when I looked for files associated wi†h the Draw Demo..</div><div><br></div><div>I'll compare the old & new files and see if I can tell where/how it got corrupted.</div><div><br></div><div>Dick</div><div><br><div><div>On Jul 5, 2008, at 8:56 PM, Graham Cox wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi Dick,<br><br>I don't really know what's happening. All I can suggest at this stage is that you set a breakpoint on [NSException raise:format:] and see if that gets triggered when the problem crops up, that at least might give us a stack trace which should indicate where the error is coming from. As you say it's a bit strange it happens on one machine and not another.<br><br>You could try deleting the preferences file and see if has an effect on the problem (~/Library/Preferences/net.apptree.. This is the only other file that the DrawDemo reads/writes.<br><br>Do other Cocoa apps work OK? I have to wonder if it's something strange about your system frameworks though I'm reluctant to pin it on that when it could be anything. If you can get any sort of info out of the debugger at the relevant place post it and I'll see if I can make any sense of it.<br><br>cheers, Graham<br><br><br><br><br><br>On 6 Jul 2008, at 5:50 am, Dick Applebaum wrote:<br><br><blockquote type="cite"> 2008-07-05 12:12:52.512 GCDrawDemo[51213:10b] *** -[NSCFArray insertObject:atIndex:]: attempt to insert nil<br></blockquote><blockquote type="cite">[]<br></blockquote><br><blockquote type="cite">Looked around for residual application support files-- couldn't find any.<br></blockquote><blockquote type="cite"><br></blockquote><br>_______________________________________________<br>Drawkit mailing list<br><a href="mailto:Drawkit@lists.apptree.net">Drawkit@lists.apptree.net</a><br>http://lists.apptree.net/listinfo.cgi/drawkit-apptree.net<br></div></blockquote></div><br></div></body></html>