Question: I kept on getting: `ArgumentError: Error #2015: Invalid BitmapData.` error whenever I tried to handle image of 5184 × 3456 dimensions, until I wasn't told by my friend that there is a limit in Flash, but he didn't know what was it exactly and I can't find anything on official doc pages.

Does any one know what it's all about? Have a link to Adobe page maybe?

Answer: 
Yes for example [here](http://kb2.adobe.com/cps/496/cpsid_49662.html) from adobe knowledge site a description of the size limit for Flash Player 10.
Also, this page might be helpful:

<http://www.bit-101.com/blog/?p=1426>

Note: the limit in Flash Player 9 is 2048 px. for width, 2048 px. for height.