1) Uninstall Eco
2) Backup Steam/steamapps/common/Eco/Eco_Data/Server/Storage
3) Remove the complete Eco folder mentioned in 2)
4) Reinstall the game
5) Restore backup from 2)
2) Backup Steam/steamapps/common/Eco/Eco_Data/Server/Storage
3) Remove the complete Eco folder mentioned in 2)
4) Reinstall the game
5) Restore backup from 2)