actionscript 3 - How can find wich object cause null object reference in Flash? -


i have error in flash application , con not find error source? possible find object cause error whit flash dibuger?

    typeerror: error #1009: cannot access property or method of null object reference.     @ reading2mergedlayers_fla::maintimeline/hidetimer2()     @ reading2mergedlayers_fla::maintimeline/frame37()     @ flash.display::movieclip/prevframe()     @ reading2mergedlayers_fla::maintimeline/back32()

run code flash builder (with source hooked in sort of project--which kind depend on have). debugger should stop @ line error, , can see variable null.


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