I have had his a bunch of times and it is always the same thing. sometimes telling me to reboot computer. Start Trains, immediately go into options and set Open GL and the screen resolution you normally use and that's it. Takes a few seconds. For same reason, Trainz likes to switch to direct X and 1024 x 768 and the warning I get is it can't communicate with the graphics card when that happens, if I get a warning at all besides that Trainz just won't start.