Crash with TiCon smeltery disabled

[GrumpyChunks]

I've installed base & modern metals (2.5.0 beta 6) along side tinkers' 1.12.1-2.11.0.106, but have modified tinkersmodules.cfg to disable the smeltery. This causes a crash.

I don't have any other mods that add ores of any kind other than base & modern metals.

I can prevent the crash in two ways.

1. Enable the smeltery, which I really don't want to enable in my modpack
2. Disable the Tinkers' integration in the base metals config (which disables most of the material traits for Tinkers' tools, which then essentially makes base & modern metals mostly redundant.

I've tried combinations of disabling liquids (in both base & modern metals) with the above, hoping to find a happy medium.

Would it be possible to make the Tinkers' integration detect the smeltery being disabled, and make the integration selective, or even add a separate option for smeltery integration?