Not enough information.
1. What device are you running the game on?
2. Game version?
3. If this is a computer - what kind of Windows do you have installed? Windows 7, 8, or 10?
4. Did you load old saves from the previous version of the game?
Yeah sorry, I'm playing on Windows 10 on my PC and the version is 0.4a (Bug Fix 2). I had saves from 0.2c and imported them.
Aah i just read, that I can't load old files sorry
Be careful next time :)