One base will not produce crystals.
One of my four bases shows 0/hr production of crystals. Crystals are Not maxed out and 5 harvesters at lvl 17 or 18 operating. Package production appears to still be working. not related to base m...
If that's not what you mean, it's because you don't have any silos adjacent to your harvesters, harvesters do not give a steady stream of crystals or tiberium, only silos do. All that harvesters do is produce packages to be picked up.
