With Bob's mods, the Mini Refinery 2 requires a full-sized Oil Refinery 1 in its recipe, rather than a mini refinery 1.

Higher tier mini refineries use the preceding tier of mini refinery, so why does this one behave differently?

Ah, that's a good question. With the most recent versions (4.0.0 and up) I switched from using hard coded values and numbers, and instead simply copying the entity, item, and recipe data from the game itself at the very end, and then editing the necessary values (size, power, etc) according to settings. Logic breaks sometimes though, so I'll have to see about that. Testing soon

Oh, I think I see the issue. It was a tiny little spelling mistake. I have a function set to replace an ingredient in an existing recipe, but it will just silently fail if one of the items mentioned doesn't exist. And I forgot that I recently changed the name of "mini-refinery" to "mini-refinery-1" and hadn't made the change here.

I added an error block to the function to make note if it fails, and realized the mini-furnace-2 recipe was also incorrect because I made a similar change to mini-furnace-1. Both issues fixed in 4.0.10