If you experience the game disappearing when you launch it...
I had the problem that when I launched the game it would disappear after sitting at the loading screen for a few seconds, but it would still appear to be running in my task manager. I fixed it after changing the game resolution in the ini file.
Try changing the game resolution in the Orb.ini file. You can find it here:
go to the screen width and height lines and change them to:
I obviously was trying to use 1920x1080, if you use a different resolution try subsituting your numbers for mine.
Hats off to Thief2125 for pointing out how to change the resolution