ActionScript 3 width and height of asset locked at zero

Answer 1

It's because I'm exporting classes in frame 200. I did this in order to preload, which I did. But even when the entire document was loaded, width and height were locked at zero.

Solution: After preloading (the main instance's loaderInfo .bytesLoaded >= .bytesTotal), call the main instance's .gotoAndStop(200). (or whatever frame you exported classes in.) At this point all your classes and objects will be valid.