2nd question... I noticed if I go into the flow tab it shows as smoke even though when I created the domain I selected fire + smoke. If I try to change it to anything other then smoke and go back to the domain tab it immediately reverts to smoke, i.e. the change in settings aren't sticking. The same goes for the collision tab. Trying to run the simulation from any other tab then the Domain tab and no simulation, so it appears the other tabs are currently useless. Is this a bug in the current version of Blender?