When I run my animated movie in normal timeline it runs great as you can see in the video but when I export it or do a test scene in animate or in browser certain line appears and don't know why I checked everything thing and it didn't seem to go 😣 So please help me as I want to proceed further but I fear if that too will want wrong 😞!!!!!
My suggestion is to try and see how it exports a PNG sequence. If that is OK then you have a reliable way of getting your stuff out. That is what I always do - export a PNG sequence and audio separately. Then I combine them in Premiere and render the video from there.
I can see that your scene is quite complex, so who knows where the SWF player is failing.
Hope this helps!
Nick - Character Designer and Animator, Flash user since 1998 | Member of the Flanimate Power Tools team - extensions for character animation