I've just downloaded Source Filmmaker, and I've read I need to open Dota 2 Tools to be able to use Dota maps in Source Filmmaker. However, everytime I open Dota 2 Tools and click any of the buttons ("Launch Custom Game Tools") a window opens then crashes. Steam will say I am running Dota 2 for a few seconds after that and then stop. Any idea what the problem is and how I can fix it? Thanks!