since 1.1.0 I can not craft e.g. Tin Ingots from Tin Essence ... why? is there a config file?

There's no config file YET, I was planning on looking into config files for the next version but it seems I have a few more issues to fix first.
Did a lot of testing but apparently I missed a few things, whoops.

Anything now registered under crop_c/<material_name> had its item TAG specified as the output item, but I forgot the fact that the recipe output HAS to be an item and CAN'T be a tag. Whoops.

This is also the reason Resource Crops has its own metals now, purely for the common material recipes to have an output item