By Steve Tunstall on Jan 12, 2012
I've just been informed that the simulator download has been updated to the latest version of 2011.1.1.
So instead of trying to upgrade your older simulator, it is possible to download and install the new one at the latest code. Mine upgraded just fine, but some people report errors during upgrading, which occurs when using a computer or laptop without enough memory or a variety of other problems. You can get the simulator here: