Victor Controllers Not Receiving Signal

[FourPenguins]

We've been having an on and off problem (it seems to come and go randomly as we make seemingly unrelated code changes).
All of the motors we are running off victors refused to run. We've tried passing them values from the joysticks and manually passing values from controls. We've tried indicators on the motor getSpeeds, and the getSpeeds match the inputs we're giving the motor setSpeeds. However, the victors are persistently showing no signal. The motors are not throwing any errors, so we're at a loss. Does anyone know why this is? Thanks guys.

NOTE: The robot is enabled, the watchdogs are fed, and all motors on Jags are still fully functional.