TypeError: Error #1009: Cannot access a property or method of a null object reference.

[alexr58234163]

I have coding that is supposed to make visible=false some borders.. inside of some of movieclip on the stage.  The movieclip on the stage has two frames, frame 1 with some stuff on it, frame 2 with some more stuff. The coding on the main stage succesfully visible=false the stuff on the first frame of the MC on the stage. But TypeError: Error #1009: Cannot access a property or method of a null object reference when I try to .visible=false the stuff on the second frame of the MC on the stage. See the video.

https://youtu.be/7PFp-1SP-i8

How can I visible=false the borders on the second frame of the MC?

[kglad · Accepted solution]

click file > publish settings and tick "permit debugging".

copy and paste here the few lines surrounding the line of code with the error.

[alexr58234163]

I thank you for replying, but rather than waiting for an explanation, i chose not to do the path that required me to ask this question

[kglad]

you're welcome.