PLEASE HELP! How do I fix this issue? I pre bought the deluxe edition on STEAM and I haven't been able to play for 1 minute yet! When I try to start a campain I get the message Not enough space even though I have more then enough and when I try to get into the market the screen just turns black. The game also says that i have 0 MB out of 0 MB! I can see signs here that issue is resolved but I cant find out how or if I need to click somewhere to find out how. I'm an absolute novice to this. Just want to play. Thank you.

HOW DO I KNOW WHAT VERSION I HAVE?