Launcher has stopped working?

[Buster_Dee]

Same here. Worked until a few days ago. I had read that one user got good FPS after lowering trees and land. I turned those all the way down, whereby it asked me to relaunch game. Launcher started crashing. I upgraded from Vista 64 to 7 64 (not to fix the game, but just something I've been planning to do). Launcher crashes. I unintalled the game, then re-installed. Still no go. I did the suggestions above, but no change.