in the tutorial they told you how to animate your shapes no matter if its a group or not when i got many problems i just open a new file and first do the tween with a simple shape then go for the final but in a single file and finaly go to my original file.... the tutorial its in your manual and its very helpful i do this tutorial but with my own files and help me more this way....i got a macintosh but i feel its the same in a pc good look