here a little output from the logfile:

Error: lua/Utility.lua:1949: attempt to perform arithmetic on local 'num' (a nil value)
[Server] Script Error #2: lua/Utility.lua:1949: attempt to perform arithmetic on local 'num' (a nil value)
Call stack:
#1: round lua/Utility.lua:1949
num = nil
idp = nil
mult = 1
#2: SetTotalKills lua/ScoringMixin.lua:253
self = ReadyRoomPlayer-681 {activeWeaponId=-1, alive=true, animateAngles=false, animateDistance=false, animatePosition=false, animateYOffset=false, animationBlend=0.20000000298023, animationGraphIndex=42, animationGraphNode=12, animationSequence2=-1, animationSequence=0, animationSpeed2=1, animationSpeed=1, animationStart2=0, animationStart=1565.3712158203, armor=0, baseYaw=0, blockPersonalResources=false, bodyYaw=0, bodyYawRun=0, cameraDistance=0, clientIndex=55, collisionRep=0, communicationStatus=1, countingDown=false, crouching=false, currentOrderId=-1, darwinMode=false, desiredCameraAngles=cdata, desiredCameraDistance=0, desiredCameraPosition=cdata, desiredCameraYOffset=0, flinchIntensity=0, followingTransition=false, fov=90, frozen=false, fullPrecisionOrigin=cdata, gameEffectsFlags=0, gameStarted=true, giveDamageTime=0, gravityTrigger=0, health=100, healthIgnored=false, isMale=true, isMoveBlocked=false, isOnEntity=false, isUsing=false, jumpHandled=false, jumping=false, layer1AnimationBlend=0, layer1AnimationGraphNode=134, layer1AnimationSequence2=-1, layer1AnimationSequence=-1, layer1AnimationSpeed2=1, layer1AnimationSpeed=1, layer1AnimationStart2=0, layer1AnimationStart=0, locationId=1, maxArmor=0, maxHealth=100, mode=1, modeTime=-1, modelIndex=69, moveButtonPressed=false, moveTransition=false, onGround=true, onLadder=false, physicsGroup=8, physicsGroupFilterMask=0, physicsType=1, playerLevel=0, playerSkill=0, primaryAttackLastFrame=false, processMove=true, pushImpulse=cdata, pushTime=0, quickSwitchSlot=1, reinforcedTierNum=0, resetMouse=0, resources=0, runningBodyYaw=0, secondaryAttackLastFrame=false, shoulderPadIndex=0, slowAmount=0, standingBodyYaw=0, startCameraAngles=cdata, startCameraDistance=0, startCameraPosition=cdata, startCameraYOffset=0, stepAmount=0, stepStartTime=0, syncHealth=false, teamNumber=0, teamResources=0, techId=43, timeGroundAllowed=0, timeGroundTouched=0, timeLastHealed=0, timeLastMenu=0, timeOfCrouchChange=0, timeOfLastJump=0, timeOfLastPhase=0, timeOfLastUse=0, timeOfLastWeaponSwitch=0, timeUntilResourceBlock=0, transitionDuration=0, transitionStart=0, tweeningFunction=1, upgrade10=1, upgrade1=1, upgrade2=1, upgrade3=1, upgrade4=1, upgrade5=1, upgrade6=1, upgrade7=1, upgrade8=1, upgrade9=1, variant=3, velocity=cdata, velocityLength=0, velocityPitch=0, velocityYaw=0, viewModelId=2438, viewPitch=0, viewRoll=0, viewYaw=0, weaponsWeight=0 }
totalKills = nil
#3: lua/PlayerRanking.lua:314
playerUpdated = false
currentPlayerNum = 18
(for generator) = function
(for state) = {1=Skulk-3647 {abilityEnergyOnChange=100, activeWeaponId=-1, alive=true, animateAngles=false, animateDistance=false, animatePosition=false, animateYOffset=false, animationBlend=0.20000000298023, animationGraphIndex=57, animationGraphNode=1, animationSequence2=-1, animationSequence=0, animationSpeed2=1, animationSpeed=1, animationStart2=0, animationStart=1479.0463867188, armor=10, baseYaw=0, blockPersonalResources=false, bodyYaw=0, bodyYawRun=0, cameraDistance=0, canUseTunnel=true, celeritySpeedScalar=0, clientIndex=30, cloakRate=0, cloakingDesired=false, collisionRep=0, communicationStatus=1, countingDown=false, crouching=false, currentOrderId=-1, darkVisionSpectatorOn=false, darwinMode=false, dashing=false, desiredCameraAngles=cdata, desiredCameraDistance=0, desiredCameraPosition=cdata, desiredCameraYOffset=0, detected=false, dragsUmbra=false, electrified=false, enableTunnelEntranceCheck=false, energizeLevel=0, enzymed=false, flinchIntensity=0, followingTransition=false, fov=105, frozen=false, fullPrecisionOrigin=cdata, fullyCloaked=false, gameEffectsFlags=0, gameStarted=true, giveDamageTime=0, gravityTrigger=0, hasAdrenalineUpgrade=false, hatched=false, health=70, healthIgnored=false, hotGroupNumber=0, inCombat=false, infestationSpeedScalar=0, infestationSpeedUpgrade=false, isCatalysted=false, isMoveBlocked=false, isOnEntity=false, isOnFire=false, isUsing=false, jumpHandled=false, jumpLandSpeed=0, jumping=false, lastTakenDamageAmount=0, lastTakenDamageOrigin=cdata, lastTakenDamageTime=0, lastTargetId=-1, layer1AnimationBlend=0, layer1AnimationGraphNode=15, layer1AnimationSequence2=-1, layer1AnimationSequence=-1, layer1AnimationSpeed2=1, layer1AnimationSpeed=1, layer1AnimationStart2=0, layer1AnimationStart=0, leaping=false, locationId=1, maxArmor=10, maxHealth=70, mode=1, modeTime=-1, modelIndex=96, moveButtonPressed=false, moveTransition=false, movementModiferState=false, numBabblers=0, onGround=true, oneHive=false, physicsGroup=8, physicsGroupFilterMask=0, physicsType=1, playIdleSound=false, playerLevel=1, player..., 2=Fade-2823 {abilityEnergyOnChange=100, activeWeaponId=-1, alive=true, animateAngles=false, animateDistance=false, animatePosition=false, animateYOffset=false, animationBlend=0.20000000298023, animationGraphIndex=63, animationGraphNode=1, animationSequence2=2, animationSequence=0, animationSpeed2=1, animationSpeed=1, animationStart2=1485.5382080078, animationStart=1486.4521484375, armor=80, baseYaw=0, blockPersonalResources=false, bodyYaw=0, bodyYawRun=0, cameraDistance=0, canUseTunnel=true, celeritySpeedScalar=0, clientIndex=44, cloakRate=0, cloakingDesired=false, collisionRep=0, communicationStatus=4, countingDown=false, crouching=false, currentOrderId=-1, darkVisionSpectatorOn=false, darwinMode=false, desiredCameraAngles=cdata, desiredCameraDistance=0, desiredCameraPosition=cdata, desiredCameraYOffset=0, detected=false, dragsUmbra=false, electrified=false, enableTunnelEntranceCheck=false, energizeLevel=0, enzymed=false, ethereal=false, etherealEndTime=0, etherealStartTime=0, flinchIntensity=0, followingTransition=false, fov=90, frozen=false, fullPrecisionOrigin=cdata, fullyCloaked=false, gameEffectsFlags=0, gameStarted=true, giveDamageTime=0, gravityTrigger=0, hasAdrenalineUpgrade=false, hasEtherealGate=false, hatched=false, health=250, healthIgnored=false, hotGroupNumber=0, inCombat=false, infestationSpeedScalar=0, infestationSpeedUpgrade=false, isCatalysted=false, isMoveBlocked=false, isOnEntity=false, isOnFire=false, isScanned=false, isUsing=false, jumpHandled=false, jumping=false, landedAfterBlink=true, lastTakenDamageAmount=0, lastTakenDamageOrigin=cdata, lastTakenDamageTime=0, lastTargetId=-1, layer1AnimationBlend=0, layer1AnimationGraphNode=9, layer1AnimationSequence2=-1, layer1AnimationSequence=1, layer1AnimationSpeed2=1, layer1AnimationSpeed=1, layer1AnimationStart2=0, layer1AnimationStart=1479.0463867188, locationId=1, maxArmor=80, maxHealth=250, mode=1, modeTime=-1, modelIndex=106, moveButtonPressed=false, moveTransition=false, movementModiferState=false, numBabblers=0, onGround=true, oneHive=false, p..., 3=Marine-2283 {activeWeaponId=3488, alive=true, animateAngles=false, animateDistance=false, animatePosition=false, animateYOffset=false, animationBlend=0.20000000298023, animationGraphIndex=42, animationGraphNode=20, animationSequence2=0, animationSequence=27, animationSpeed2=1, animationSpeed=1, animationStart2=1485.7047119141, animationStart=1485.8001708984, armor=30, baseYaw=0, blockPersonalResources=false, bodyYaw=0, bodyYawRun=0, cameraDistance=0, canUseTunnel=true, catpackboost=false, clientIndex=6, collisionRep=0, communicationStatus=1, countingDown=false, crouching=false, currentOrderId=-1, darwinMode=false, desiredCameraAngles=cdata, desiredCameraDistance=0, desiredCameraPosition=cdata, desiredCameraYOffset=0, desiredSprinting=false, enableTunnelEntranceCheck=false, flashlightLastFrame=false, flashlightOn=false, flinchIntensity=0, followingTransition=false, fov=90, frozen=false, fullPrecisionOrigin=cdata, gameEffectsFlags=0, gameStarted=true, giveDamageTime=0, gravityTrigger=0, health=100, healthIgnored=false, hotGroupNumber=0, inCombat=false, interruptAim=false, isCorroded=false, isMale=true, isMoveBlocked=false, isOnEntity=false, isUsing=false, jumpHandled=false, jumping=false, lastOrderType=1, lastSpitDirection=cdata, lastTakenDamageAmount=0, lastTakenDamageOrigin=cdata, lastTakenDamageTime=0, lastTargetId=-1, layer1AnimationBlend=0, layer1AnimationGraphNode=163, layer1AnimationSequence2=-1, layer1AnimationSequence=-1, layer1AnimationSpeed2=1, layer1AnimationSpeed=1, layer1AnimationStart2=0, layer1AnimationStart=0, locationId=1, maxArmor=30, maxHealth=100, mode=1, modeTime=-1, modelIndex=61, moveButtonPressed=false, moveTransition=false, nanoShielded=false, onGround=true, onLadder=false, parasited=false, physicsGroup=8, physicsGroupFilterMask=0, physicsType=1, playerLevel=0, playerSkill=0, poisoned=false, primaryAttackLastFrame=false, processMove=true, pushImpulse=cdata, pushTime=0, quickSwitchSlot=2, reinforcedTierNum=0, requireNewSprintPress=false, resetMouse=0, resources=0, runningBodyYaw=0, ruptured..., 4=Marine-422 {activeWeaponId=2055, alive=true, animateAngles=false, animateDistance=false, animatePosition=false, animateYOffset=false, animationBlend=0.10000000149012, animationGraphIndex=42, animationGraphNode=120, animationSequence2=30, animationSequence=31, animationSpeed2=1, animationSpeed=1, animationStart2=1565.3630371094, animationStart=1565.4581298828, armor=3.75, baseYaw=0, blockPersonalResources=false, bodyYaw=-0.024399161338806, bodyYawRun=-1.486196398735, cameraDistance=0, canUseTunnel=true, catpackboost=false, clientIndex=47, collisionRep=0, communicationStatus=1, countingDown=false, crouching=false, currentOrderId=-1, darwinMode=false, desiredCameraAngles=cdata, desiredCameraDistance=0, desiredCameraPosition=cdata, desiredCameraYOffset=0, desiredSprinting=false, enableTunnelEntranceCheck=false, flashlightLastFrame=false, flashlightOn=false, flinchIntensity=0, followingTransition=false, fov=90, frozen=false, fullPrecisionOrigin=cdata, gameEffectsFlags=0, gameStarted=true, giveDamageTime=1555.9428710938, gravityTrigger=0, health=77.5, healthIgnored=false, hotGroupNumber=0, inCombat=false, interruptAim=false, isCorroded=false, isMale=true, isMoveBlocked=false, isOnEntity=false, isUsing=false, jumpHandled=false, jumping=false, lastOrderType=1, lastSpitDirection=cdata, lastTakenDamageAmount=75, lastTakenDamageOrigin=cdata, lastTakenDamageTime=1559.0053710938, lastTargetId=-1, layer1AnimationBlend=0, layer1AnimationGraphNode=163, layer1AnimationSequence2=36, layer1AnimationSequence=-1, layer1AnimationSpeed2=1, layer1AnimationSpeed=1, layer1AnimationStart2=1560.9384765625, layer1AnimationStart=1561.1076660156, locationId=1, maxArmor=30, maxHealth=100, mode=1, modeTime=-1, modelIndex=61, moveButtonPressed=true, moveTransition=false, nanoShielded=false, onGround=true, onLadder=false, parasited=false, physicsGroup=8, physicsGroupFilterMask=0, physicsType=1, playerLevel=0, playerSkill=0, poisoned=false, primaryAttackLastFrame=false, processMove=true, pushImpulse=cdata, pushTime=0, quickSwitchSlot=2, reinforcedT..., 5=Marine-496 {activeWeaponId=2125, alive=true, animateAngles=false, animateDistance=false, animatePosition=false, animateYOffset=false, animationBlend=0.20000000298023, animationGraphIndex=42, animationGraphNode=20, animationSequence2=28, animationSequence=27, animationSpeed2=1, animationSpeed=1, animationStart2=1485.6361083984, animationStart=1485.8646240234, armor=30, baseYaw=0, blockPersonalResources=false, bodyYaw=1.4835300445557, bodyYawRun=0, cameraDistance=0, canUseTunnel=true, catpackboost=false, clientIndex=34, collisionRep=0, communicationStatus=1, countingDown=false, crouching=false, currentOrderId=-1, darwinMode=false, desiredCameraAngles=cdata, desiredCameraDistance=0, desiredCameraPosition=cdata, desiredCameraYOffset=0, desiredSprinting=false, enableTunnelEntranceCheck=false, flashlightLastFrame=false, flashlightOn=false, flinchIntensity=0, followingTransition=false, fov=90, frozen=false, fullPrecisionOrigin=cdata, gameEffectsFlags=0, gameStarted=true, giveDamageTime=0, gravityTrigger=0, health=100, healthIgnored=false, hotGroupNumber=0, inCombat=false, interruptAim=false, isCorroded=false, isMale=true, isMoveBlocked=false, isOnEntity=false, isUsing=false, jumpHandled=false, jumping=false, lastOrderType=1, lastSpitDirection=cdata, lastTakenDamageAmount=0, lastTakenDamageOrigin=cdata, lastTakenDamageTime=0, lastTargetId=-1, layer1AnimationBlend=0, layer1AnimationGraphNode=163, layer1AnimationSequence2=38, layer1AnimationSequence=-1, layer1AnimationSpeed2=1, layer1AnimationSpeed=1, layer1AnimationStart2=1505.0389404297, layer1AnimationStart=1505.5979003906, locationId=1, maxArmor=30, maxHealth=100, mode=1, modeTime=-1, modelIndex=61, moveButtonPressed=false, moveTransition=false, nanoShielded=false, onGround=true, onLadder=false, parasited=false, physicsGroup=8, physicsGroupFilterMask=0, physicsType=1, playerLevel=1, playerSkill=324, poisoned=false, primaryAttackLastFrame=false, processMove=true, pushImpulse=cdata, pushTime=0, quickSwitchSlot=2, reinforcedTierNum=0, requireNewSprintPress=false, resetMou... }
(for control) = 21
_ = 21
player = ReadyRoomPlayer-681 {activeWeaponId=-1, alive=true, animateAngles=false, animateDistance=false, animatePosition=false, animateYOffset=false, animationBlend=0.20000000298023, animationGraphIndex=42, animationGraphNode=12, animationSequence2=-1, animationSequence=0, animationSpeed2=1, animationSpeed=1, animationStart2=0, animationStart=1565.3712158203, armor=0, baseYaw=0, blockPersonalResources=false, bodyYaw=0, bodyYawRun=0, cameraDistance=0, clientIndex=55, collisionRep=0, communicationStatus=1, countingDown=false, crouching=false, currentOrderId=-1, darwinMode=false, desiredCameraAngles=cdata, desiredCameraDistance=0, desiredCameraPosition=cdata, desiredCameraYOffset=0, flinchIntensity=0, followingTransition=false, fov=90, frozen=false, fullPrecisionOrigin=cdata, gameEffectsFlags=0, gameStarted=true, giveDamageTime=0, gravityTrigger=0, health=100, healthIgnored=false, isMale=true, isMoveBlocked=false, isOnEntity=false, isUsing=false, jumpHandled=false, jumping=false, layer1AnimationBlend=0, layer1AnimationGraphNode=134, layer1AnimationSequence2=-1, layer1AnimationSequence=-1, layer1AnimationSpeed2=1, layer1AnimationSpeed=1, layer1AnimationStart2=0, layer1AnimationStart=0, locationId=1, maxArmor=0, maxHealth=100, mode=1, modeTime=-1, modelIndex=69, moveButtonPressed=false, moveTransition=false, onGround=true, onLadder=false, physicsGroup=8, physicsGroupFilterMask=0, physicsType=1, playerLevel=0, playerSkill=0, primaryAttackLastFrame=false, processMove=true, pushImpulse=cdata, pushTime=0, quickSwitchSlot=1, reinforcedTierNum=0, resetMouse=0, resources=0, runningBodyYaw=0, secondaryAttackLastFrame=false, shoulderPadIndex=0, slowAmount=0, standingBodyYaw=0, startCameraAngles=cdata, startCameraDistance=0, startCameraPosition=cdata, startCameraYOffset=0, stepAmount=0, stepStartTime=0, syncHealth=false, teamNumber=0, teamResources=0, techId=43, timeGroundAllowed=0, timeGroundTouched=0, timeLastHealed=0, timeLastMenu=0, timeOfCrouchChange=0, timeOfLastJump=0, timeOfLastPhase=0, timeOfLastUse=0, timeOfLastWeaponSwitch=0, timeUntilResourceBlock=0, transitionDuration=0, transitionStart=0, tweeningFunction=1, upgrade10=1, upgrade1=1, upgrade2=1, upgrade3=1, upgrade4=1, upgrade5=1, upgrade6=1, upgrade7=1, upgrade8=1, upgrade9=1, variant=3, velocity=cdata, velocityLength=0, velocityPitch=0, velocityYaw=0, viewModelId=2438, viewPitch=0, viewRoll=0, viewYaw=0, weaponsWeight=0 }
client = ServerClient { }
steamId = 3529657
playerData = {steamId=3529657 }
Error: lua/Utility.lua:1949: attempt to perform arithmetic on local 'num' (a nil value)

Hi,

I'm afraid I've never seen that happen before. Perhaps it's a new bug...
Can you try pasting that message into the Combat forum?

http://forums.unknownworlds.com/discussion/comment/2178450#Comment_2178450

I'm not actively maintaining the mod any more, just posting updates made by other people...

post is done.

it is a windows 2012 r2 server (vm) on vmware 5.1.
on this server (vm) only run 2-3 ns2 servers.