Are you Mac or PC? On Mac, select the program icon and choose "Information" (Command-I), then select the popup "Memory", and fill in a larger size in the bottom slot. You should give it as much as possible, but about 5-10 MB less than typically available (to allow your system to get some extras, when needed). Because the Mac version of the patch is currently no installer, it will not use your previous setting, but ships with a minimum memory partition of 60MB which is much too low for most of the downloaded models.