Hi Wiwiweb,

in https://i.imgur.com/a0JCRKr.jpeg you an see that I placed a Titanium plate because "fi_material_titanium" seems no longer to be existing in my savegame. I am unsure if this is right or iif it's a general change in 248k mod but it coule be the first ones.

Can you look this up please? Here is a screenshot with the "Invalid: fi_materials_titan" report: https://i.imgur.com/aRZy0Qo.jpeg

Also can you tell me how to "play" with your mod? I love this current list but I want to have a much deeper ones or, if possible, a modular ones which only adds the next few milestones if some other ones are initialy done and/or done a few more times so a dynamic Milestone list which is selfexpanding depenidng un unlocks.

The item exists for me: https://i.imgur.com/uHRLSAw.png
Using SE 0.6.85, K2 1.3.4, and 248k 1.0.29 in Overhaul mode.

For playing around the code:
You can find mod zips in your mods folder. Extract a zip and you'll see the code of a mod. Factorio will load code from extracted folders before zips, so you don't have to zip it back.