nawinator: Unfortunately I don't have much more Information about this Problem. After reaching the 90s ingame or trying to start a new game at that date(or later) the game stops and a small message frame apears centered on the screen. I don't remember the exact message because I installed a backup of the december version to avoid this problem, but it was something like "An internal Error ocurred" or something like that. There was also no more info inside the logfile.
roidal: How is it with the actual version?
I just noticed the new Version and reinstalled the Game (I also removed the games userdata).
It is working!
I created a new map and can play in modern times again.
I really like this community btw.
A little bit of tobic but I saw the name matthias.guertler a few days ago while playing a openttd game using the DACH package. If you are the some person: Nice done for this one, too.