The switch software was upgraded from 1.0.09 to 1.0.10 after the issue started. I downgraded it as well. The software controller upgraded from 4.4.4 to 5.7.4, but this occurred after the switch...

Existing network switch stopped passing VLAN traffic. It otherwise seems functional. All 4 functioning VLANs stopped working. I've reset the switch and configured it independently of the software...