Ok, I know Waterfox is not going to work, because of the 64 bit issue.
Reading the forums, Chrome seems to be having some issues with DD and memory management. Fair enough.
But QCF... you have reduced me to using IE8... an even that is no dice. I just bought the game 10 minutes ago.
Here's hoping you can offer up a solution.
btw, other Unity-based games like Wazhack have been running fine for me in Chrome/IE8, so it's not the Unity install.