CortexInside Thanks for sending the file! It looks like you've found a bug.
Your settings.json is valid and loads without errors, but Wurst thinks the modded blocks don't exist and incorrectly filters them out.
I've tested with just Create and Wurst. I can add create:zinc_ore and it works, but after a restart it turns into minecraft:air.
I think what's happening here is that Wurst is loading its settings before other mods have a chance to register their custom blocks. So when it checks the X-Ray BlockList, those custom ores don't exist yet and the registry returns the default minecraft:air value.
I don't have a fix yet but this definitely looks like something that needs fixing soon. I've made a note to look into this more later. Need to finish something else first.
