ActionScript 3.0 :: TypeError: Error #2007: Parameter Must Be Not Null

Jul 13, 2009

I have an object and thtrows me an error when click the object by a second time...

TypeError: Error #2007: El valor del par�metro child debe ser distinto de null.
at flash.display:isplayObjectContainer/removeChild()
at Tab1/changeStateTab()

PHP Code:

[code]....

technically is OK but i don't understand whys crash when call this.removeChild(tabMenu);

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