[0.16.5] Loading Saves Error

[Marqee]

loading after updating game from 0.16.4 to 0.16.5 gives error : "Opening yyy.zip file failed : bad zip file.
the file that is giving error was a 0.15.x loaded and saved with game updated to 0.16.4

Loading old 0.15.x saves , with game updated to 0.16.5 , and reloading , gives no errors.

[Loewchen]

Provide info requested here: viewtopic.php?f=7&t=3638 please.