3 dimension does not work in loaded swf

Hello everyone!

I’ve created an animated navigation menu which uses fading and rotation animations in AS3. Everything works fine if I run only the menu.
When the main application is running, the loaded swf menu doesn’t work properly. Fading works, rotation doesn’t.
I thought some libraries must be declared in external swf, but I’ve imported flash.geom.*; and many others.
It seems the problem is to display 3D in loaded swf.

Any ideas?

Thanks for advance!