Someone asked me to figure this out. It's crashing for old saves in the drawPartyLevels function because drawContents's JsonEx.parse returns an empty string. JsonEx.parse returns a reconstructed object from the Json Data from the save file. Something has clearly changed in the game to the point that some object in the save files are not reconstructed (because the structure/layout of objects change or have gone missing, examples). The author maybe should have left all old objects in and simply 'on load' judged old version saves and reconstructed them referencing new objects. This would have enabled forward-compatibility for old saves. It's also a bit of a pain in the neck to manage something like this over a long period of time. If I knew what changes were made that were save-incompatible (dev would need to say) I could write a small upgrade function, but eh. For now, saves need to "disable" if that function returns an empty string (unable to reconstruct object). That way people don't get crashes just browsing. At least, if there isn't another reason I didn't notice from a cursory glance. *shrug* Oh and if you're on Linux, use ./nw, NOT ./Game.
