I am currently working in an AS3 project and experiencing a problem due to a bug (well, perhaps…) in Flash player…
What i am doing is:
On frame 2:
I set the visibilities of about 8 to 9 buttons that are placed at design time.
Then I add event listeners to them.
On frame 4:
There is a ‘Back’ link that takes me on to frame 2 again.
Now, when the play head goes back to frame 2, I get a runtime error showing: “Cannot access a property or method of a null object reference.”
When I inspect the variables, I find that all the buttons have been instantiated apart from one button (error occurs when visibility of that button is being set)…
Checking the index value of that button, i get 10.
Now if I change the indexes at design time and place some other button at that index, error occurs for that button (ie. the button that i just placed at index 10).
I came across this error last week as well and assuming this as a flash bug, I arranged a hack. Last time the problem took place at index 3. So i just put a temporary movie clip outside the stage at index 3. (And if i debug it, i find that this temporary movie clip does get null when i move back to frame 2 from frame 4)… In case of flash bug, i can use this workaround, but is it possible that on different machines, this problem will occur for different indexes… (ie. sometimes on index 4, sometimes index 8 etc…)?
There is a bug described on the adobe site… I dont know if that is related with the issue I am experiencing because the workarounds mentioned dont work for me…
[SIZE=1]
Official bug description:
http://bugs.adobe.com/jira/browse/FP-43[/SIZE]
