If you observe this, this is ‘normal’.
This is due to the scrollable image cache in LauncherPro/ADW not refreshed after the upgrade.
Just kill your launcher or reboot your phone to solve this.
We’ll add a new feature to clear launcher cache during next days in order to avoid this.
Thanks for your understanding.
EDIT: oh yes, don’t forget to update your skin if you want your new button skinned 😉