Please send your savegame (.db and .eco file in /Steam/steamapps/common/Eco/Eco_Data/Server/Storage) via upload at Google Drive or something to [email protected] and mention this topic in your mail (important!).
This has already been fixed for the next version. You need to set your system language to english, as the character İ is not supported. That was mentioned in the Bug Tracker Issue we sent you via mail, by the way.