This is a known issue with Yahoo Messenger, Bandoo and animations and it has been found that the root of problem is Adobe Flash Player. Firstly, remove Adobe Flash Player from your computer and make sure all the applications are closed. After the apps have been removed, reboot the computer then download a new version from the Adobe page. Make sure to download and install the plug-in with Internet Explorer. Start Internet Explorer to directly load the URL using
Start > RUN > iexplore http://get.adobe.com/flashplayer/
Install the plug-in, start the apps and you should see the animations.