Ruby comb has no products when centrifuged

[Former user]

After updating to 1.7.2 Ruby combs no longer produce anything when centrifuged.

[timeslice42]

I have this problem too, but instead of the ruby comb it's some of the gregtech combs (zinc, titanium, tungsten) that don't produce their primary product (grains).

[Alex Binnie]

Fixed in 1.7.3