So been playing this game for a while, on The Last Stand for the hundreth time, as this time I have a good crew with some great drones and weapons, thinking it will be my time to finally kill the mothership. Then my friend messages me on skype, so I quickly alt+tab to reply to him and try to swap back, but now it won't reopen. It just changes the resolution of whatever window I've got open and puts a black box in the top left corner. The music is still playing so I know it's running. Was running the game in Fullscreen stretch I believe. Anyone know how to get back on it without closing it, was really hoping this time I could complete it.

Gonna leave the game open as long as poss, but please reply quickly.
Many thanks,
Jacob
