Web Player Crashes Window Instance

Hi, for some reason when I try to close the window instance, the unity web player crashes! (from time to time). Is there code I need to write for a 'clean exit' from the web broswer?

Normally that shouldn't be a problem. A webpage can close at anytime and you can't do something about it. Well, do you use some "evil stuff" like threads? ;) That would be the only thing that came to my mind. have you checked the log file? It's somewhere in local settings on windows. Take a look at Web Player Debugging.