| Problem: stage 6 creates strange assignments on left hand side EXP: [self cell] = newCell; // because "cell" was a private // ivar of superclass Solution: Use only methods provided in API. Exp: [self selectCell:newCell]; Problem: Program crashes when reading defaults Solution: Remove old defaults, and move to new model. Problem: Program crashes when setting popup's title Solution: In IB, connect the popup outlet to the button itself. In 3.x, you had to pop-up list and connect to the matrix, now you just connect to the NSButton object. Problem: Program crashes when accessing stored defaults array Solution: If you store an array to the NSUserDefaults database, you must retrieve it with "arrayForKey:" even though you stored it with setObject:forKey:. When you retrieve it via "objectForKey:", it comes back as an NSString, which is not what you want. |
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