Crash when activating mod on existing save

[ololduck]

Hi, I wanted to have a look at this mod, because i like the idea of self-improving hardware. However, when loading the mod, the following error occurred:

Here's the text version for convenience:

The mod Factory Levels (0.7.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event factory-levels::on_runtime_mod_setting_changed (ID 63)
Invalid ItemID: expected LuaItemPrototype, LuaItemStack, LuaItem or string.
stack traceback:
    [C]: in function 'insert'
    __factory-levels__/control.lua:347: in function 'insert_inventory_contents'
    __factory-levels__/control.lua:415: in function 'upgrade_factory'
    __factory-levels__/control.lua:439: in function 'replace_machines'
    __factory-levels__/control.lua:31: in function 'get_built_machines'
    __factory-levels__/control.lua:553: in function <__factory-levels__/control.lua:550>

It is not a blocking issue, as my old savegame, without the mod active, loads fine.

Context of the crash

I've looked at the other opened issues, and although they present a similar issue, in my error message, the line numbers are different.

• I have Space Age & Quality active
• The savegame is already quite advanced and most machines have produced enough items to trigger level evolution
• Some machines have quality-enabled inputs & outputs
• Some machines have quality themselves
• Some machines have quality modules inside them
• Some machines have quality-enabled quality|productivity modules inside them
• Some inserters have quality filters

How to reproduce

Loading the game with the Factory Levels mod enabled. The popup appears immediately after load. I'm not sure, but maybe i can send you my save file(s)?

I tried to reproduce it on a new save, but whatever i did, i could not reproduce it. I may be missing something.

[renoth]

Please try 0.7.7

[ololduck]

Well, it actually works! Well done and thank you!

[IG2WTC]

0.7.7 seems to have also fixed it for me! Thank you so much!