Nullreference Exception logspam with waterfall

[Oscilloscopy]

Testing the capsule alone with Waterfall installed gives the error:
[EXC 09:48:14.980] NullReferenceException: Object reference not set to an instance of an object
Waterfall.WaterfallEffect.Update () (at <1659177fefec40939a3e9009444596e8>:0)
Waterfall.ModuleWaterfallFX.LateUpdate () (at <1659177fefec40939a3e9009444596e8>:0)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
ModuleManager.UnityLogHandle.InterceptLogHandler:LogException(Exception, Object)
UnityEngine.Debug:CallOverridenDebugHandler(Exception, Object)

Same behavior happens with the OR-T RCS thrusters.