Yes i know this is a terrible idea i just did it for testing pYblock fixes LOL

https://imgur.com/gN9x1lq

The mod Gridlocked (0.0.12) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event gridlocked::on_player_display_scale_changed (ID 114)
__gridlocked__/control.lua:66: attempt to index local 'frame' (a nil value)
stack traceback:
    __gridlocked__/control.lua:66: in function 'update_label_position'
    __gridlocked__/control.lua:76: in function <__gridlocked__/control.lua:74>

Is this because of adding the mod to an existing save? I'm not sure if that's something I want to support lol

Yes, this is adding to an existing save. Not sure whether or not you want to make a proper error message or just leave it as "don't"

I just decided to fix it in 0.0.13, the error was really simple to fix so why not