To clarify you could either use the updated NanoFX library or replace
def OnYield(self, pShip, pInstance, pEvent, pTorp):
if FoundationTech.EffectsLib:
FoundationTech.EffectsLib.CreateSpecialFXSeq(pShip, pEvent, 'Damper')
with
def OnYield(self, pShip, pInstance, pEvent, pTorp):
if FoundationTech.EffectsLib:
FoundationTech.EffectsLib.CreateSpecialFXSeq(pShip, pEvent, None)
in DamperWeapon.py.