1) your 3D scene background must have to be empty or no object. If have, choose not to render that particular object.

2) like gster123 said, use tif or tga 32 bits that can support alpha......

yeap. But its shouldnt have any history conflict right?
anyway, tried and....
Still same problem happen :(

thanks

http://i79.photobucket.com/albums/j160/hwachai/problems.jpg


here is the problem i face when i apply cluster and parent to root.
The last curve point drift/ or received double input when i move...