CALayer position contains NaN: [nan 15]

Question

My iphone app crashes showing error

*** Terminating app due to uncaught exception 'CALayerInvalidGeometry', reason: 'CALayer position contains NaN: [nan 15]'

What does this mean ?

Answer 1

"CALayer position contains NaN: [nan 15]" indicates that you have a division by zero somewhere. NSLog() will help you isolate it. If you posted the stack log, more help would have been available.