p/s: my english is not good... so sr
I went to my game folder, went to graphics and deleted the battlers folder.
I then went to the Ultimate BW Pack and copied the battlers folder.
I then went back to my game folder, went to graphics and pasted the new battlers folder.
Mine seem to be working just fine, they are animated and I have no problems with transparency.
Make sure you downloaded the latest update for Ultimate BW Pack.
If you keep having problems, you may have to restart your game.
I hope this helps you.