Well I don't know if I started an "old campaign". I bought the game last week and started a campain.

"Mission 4 Startup 4.zip" is - as the name tells - Mission 4
"Kohlezug" is Mission 2

Yesterday I received an update and when I wanted to start one of my save games, I got this exception (See attachment / version info)

Thank you for fixing it,
Dominik