Dude, and I thought I was having problems
But seriously, and in my very humble opinion.
I dont know what platform it is supposed to run on.
If you are using Air. I believe that there is a tweak for flashplayer 11 you need to be able to use stage3d call on a pc.
For your artist, if he/she is using flex builder I believe that it is required to tweak the build xml to state use flash player 13 to use the stage3d functions in player 11. (seriously).
Thats about all I have found that somewhat grazes your problem.
Its a lot of I believes, you'll have to take that on faith (although it is intended to give you something to google.)
Just starting to investigate stage3d myself.
I hope some techno-evangelist will offer some real aid.
Stage3D, StageVideo and StageWebView all use different hardware based rendering that is completely outside the SWFs standard display list. StageVideo for example can only play under the display list. StageWebView can only play over the display list.
The wmode parameter should be adjusted to 'direct' to see Stage3D. I'm not sure how you're exporting or wrapping your SWF but have your designer try setting the hardware acceleration wmode to direct. Either in SWF publish properties or you can even set it on your main class via the SWF declaration, e.g.:
That should enable you to 'see' Stage3D content. You probably have it set to GPU right now. That may interfere. Without that setting many 3d frameworks won't work at all which may be why you see nothing.
Check the Context3D class to see under the hood, that may help as well.
Also make sure (as mentioned above) you make sure you're exporting for Flash Player 11 and up, 11.1 being preferable for any desktop game. You should make sure your designer has updated the player configs to support exporting for -swf-version 14.