Noticed something interesting with the auto generated files...
nethermetals-bmores.json
nethermetals-mmores.json
the two are exactly the same I think the nethermetals-mmores.json is wrong.
the nethermetals-vanilla_ores.json seemed correct.
correction in the vanilla file nethermetals:redstone_ore should be nethermetals:nether_redstone_ore or it causes a crash.

details...
Forge 1.10.2-12.18.3.2281
NetherMetals-1.10.2-1.1.4
OreSpawn_1.10.2-1.1.0
BaseMetals_1.10.2-2.4.0.11
ModernMetals-0.11.0
EndMetals_1.9-1.0.4

Or have I done something wrong?