When installing this along with Frackin' Universe I found-out that they're incompatible. The result is 21 default crafting unlocks getting clobbered (due to how FU implements the research system). The problem is exactly as detailed here.[frackinuniverse.miraheze.org]

The fix is easy. The player.config.patch file needs to be changed so the item paths don't all end in "/1" but "/-".