Load game boots back to title

[circusvalley]

So apparently I hecked up my game real bad, I've done it before and was able to fix it when the issue was just an out-of-place file or something but I can't seem to figure it out this time.
Everything was working fine, I changed a few background tiles (wallpaper and floor) in one room of my house, repacked everything, and now whenever I try to load my save I get kicked back to the title screen, and this is displayed in the cmd console thing:

It's probably something obvious, but I don't have a whole lot of experience doing this. Can anyone give me a hand? I didn't really mess with anything other than two visual tiles but somehow I managed to send everything to heck.