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<blockquote data-quote="fontdesigner" data-source="post: 905697" data-attributes="member: 120549">Could somebody help me?I declared NSMutableArray in header file like this:TPEditGlyphView.h:@interface TPEditGlyphView : NSView{&nbsp; &nbsp; ...&nbsp; &nbsp; &nbsp; &nbsp; NSMutableArray * observedKnots;&nbsp; &nbsp; ....&nbsp; &nbsp; &nbsp; &nbsp; }Next I try to use one, but any access makes &quot;EXC_BAD_ACCESS&quot;..TPEditGlyphView.m://only places where observedKnots appears.....-(void) awakeFromNib {&nbsp;&nbsp; &nbsp; &nbsp; .....&nbsp; &nbsp; observedKnots = [NSMutableArray arrayWithCapacity:0]; //CRASH, EXPLOSION...}-(void) observeValueForKeyPath: keyPath ofObject: object change: change context:context {&nbsp;if (context == TPKnotsSelectionDidChangedContext) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; for (TPKnot *knot in observedKnots) {&nbsp; &nbsp; //CRASH, EXPLOSION...&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; ....&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; observedKnots = [NSMutableArray arrayWithCapacity:0];&nbsp; &nbsp; &nbsp; &nbsp; for (TPKnot *knot in [knotsController selectedObjects]) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ....&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [observedKnots addObject: knot];&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ....&nbsp; &nbsp; &nbsp; &nbsp; }}....Where could be bug?</blockquote>

[QUOTE="fontdesigner, post: 905697, member: 120549"] Could somebody help me? I declared NSMutableArray in header file like this: TPEditGlyphView.h: @interface TPEditGlyphView : NSView { ... NSMutableArray * observedKnots; .... } Next I try to use one, but any access makes "EXC_BAD_ACCESS".. TPEditGlyphView.m: //only places where observedKnots appears ..... -(void) awakeFromNib { ..... observedKnots = [NSMutableArray arrayWithCapacity:0]; //CRASH, EXPLOSION... } -(void) observeValueForKeyPath: keyPath ofObject: object change: change context:context { if (context == TPKnotsSelectionDidChangedContext) { for (TPKnot *knot in observedKnots) { //CRASH, EXPLOSION... .... } observedKnots = [NSMutableArray arrayWithCapacity:0]; for (TPKnot *knot in [knotsController selectedObjects]) { .... [observedKnots addObject: knot]; .... } } .... Where could be bug? [/QUOTE]

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