refresh game.
clear browser cache.
defragment your hard drive.
repair your internet connection.
try another browser type (I use mozilla firefox with no issue).
check your antivirus setting.
update adobe flash.
try an alternative page to access (I use classic.graalonlkine.com but facebook has an
'app' as well that you can play from, and some one has said there's a site called y8.com or something but i haven't tried it).
That's my two cents so far. If you're still having issues, maybe hit up toonslab.