Hey guys Nate here!
We are experiencing some issues with the game starting on Windows 8.1, I am working to address this issue tirelessly, I have been since it was discovered last night.
Sorry for this big pain in the butt for you Windows 8 players. If you are using Windows 8 and it is running fine, I would love to hear from you, that will help me isolate the issue further!
Thank you so much for all of your support so far! You have been truly awesome!