Help: stage objects get in front of script objects?

This is getting me mad…

addChild(my_script_object);

I can’t see it…

If I try trace(numChildren) I get 10, so then I try addChildAt(my_script_object,9) and still cant’ see it.

If I delete all the objects in stage then I finally see it… If I delete one by one I find my_script_objects gets beneath a bitmap placed by hand by the designer.

Any ideas?

TIA