That's strange, so it can't be something missing from the dropbox server thats just saved in my cache on Chrome if it's worked for you too?!
Because I literally can't find any missing objects or events linked to objects that no longer exist etc. It's really strange.
But thanks for your feedback, it's early stages still, needs cleaning up and levels adding etc <img src="smileys/smiley1.gif" border="0" align="middle" />
*Edit* Also I download Firefox 8 and did encounter the problem, but I must say, even before that point the general performance of Firefox is TERRIBLE compared to Chrome. A much smoother gaming experience with Chrome.