fixed indexing nil values

script/c20457551.lua

@@ -55,12 +55,14 @@ function c20457551.atkdown(e,tp,eg,ep,ev,re,r,rp)
 	local eqc=e:GetHandler():GetEquipTarget()
 	if Duel.GetAttacker()~=eqc and Duel.GetAttackTarget()~=eqc then return end
 	local tc=eqc:GetBattleTarget()
+	if tc then
 	local e1=Effect.CreateEffect(e:GetHandler())
 	e1:SetType(EFFECT_TYPE_SINGLE)
 	e1:SetCode(EFFECT_UPDATE_ATTACK)
 	e1:SetReset(RESET_PHASE+RESET_DAMAGE_CAL)
 	e1:SetValue(-eqc:GetLevel()*100)
 	tc:RegisterEffect(e1)
+	end
 end
 function c20457551.desreptg(e,tp,eg,ep,ev,re,r,rp,chk)
 	if chk==0 then return Duel.GetCurrentPhase()==PHASE_END end

script/c28357177.lua

@@ -21,8 +21,10 @@ function c28357177.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
 	end
 end
 function c28357177.operation(e,tp,eg,ep,ev,re,r,rp)
-	local g=Duel.GetChainInfo(0,CHAININFO_TARGET_CARDS):Filter(Card.IsRelateToEffect,nil,e)
-	if g:GetCount()>0 then
-		Duel.SendtoHand(g,nil,REASON_EFFECT)
+	local g=Duel.GetChainInfo(0,CHAININFO_TARGET_CARDS)
+	if g then g=g:Filter(Card.IsRelateToEffect,nil,e)
+		if g:GetCount()>0 then
+			Duel.SendtoHand(g,nil,REASON_EFFECT)
+		end
 	end
 end

script/c36088082.lua

@@ -35,5 +35,8 @@ function c36088082.regop(e,tp,eg,ep,ev,re,r,rp)
 	end
 end
 function c36088082.desop(e,tp,eg,ep,ev,re,r,rp)
-	Duel.Destroy(e:GetOwner():GetBattleTarget(),REASON_EFFECT)
+	local tg=e:GetOwner():GetBattleTarget()
+	if tg then
+		Duel.Destroy(tg,REASON_EFFECT)
+	end
 end

script/c4259068.lua

@@ -16,7 +16,7 @@ function c4259068.initial_effect(c)
 	c:RegisterEffect(e2)
 end
 function c4259068.costchange(e,re,rp,val)
-	if re:IsHasType(EFFECT_TYPE_ACTIVATE) and re:GetHandler():IsType(TYPE_SPELL) and not re:GetHandler():IsCode(9236985) then
+	if re and re:IsHasType(EFFECT_TYPE_ACTIVATE) and re:GetHandler():IsType(TYPE_SPELL) and not re:GetHandler():IsCode(9236985) then
 		return 0
 	else
 		return val

script/c440556.lua

@@ -43,6 +43,8 @@ function c440556.spop(e,tp,eg,ep,ev,re,r,rp)
 		c:RegisterEffect(e1)
 	elseif cp~=tp then
 		local cg=Duel.GetFieldGroup(cp,LOCATION_EXTRA,0)
+		if cg and cg:GetCount()>0 then
 		Duel.ConfirmCards(cg,tp)
+		end
 	end
 end

script/c47660516.lua

@@ -41,12 +41,13 @@ function c47660516.activate(e,tp,eg,ep,ev,re,r,rp)
 		Duel.Overlay(sc,Group.FromCards(tc))
 		Duel.SpecialSummon(sc,SUMMON_TYPE_XYZ,tp,tp,false,false,POS_FACEUP)
 		sc:CompleteProcedure()
-	end
-	if Duel.GetOverlayCount(tp,0,1)~=0 then
-		Duel.BreakEffect()
-		local g1=Duel.GetOverlayGroup(tp,0,1)
-		Duel.Hint(HINT_SELECTMSG,tp,aux.Stringid(47660516,0))
-		local mg2=g1:Select(tp,1,1,nil)
-		Duel.Overlay(sc,mg2)
+
+		if Duel.GetOverlayCount(tp,0,1)~=0 then
+			Duel.BreakEffect()
+			local g1=Duel.GetOverlayGroup(tp,0,1)
+			Duel.Hint(HINT_SELECTMSG,tp,aux.Stringid(47660516,0))
+			local mg2=g1:Select(tp,1,1,nil)
+			Duel.Overlay(sc,mg2)
+		end
 	end
 end

script/c59797187.lua

@@ -11,8 +11,9 @@ function c59797187.initial_effect(c)
 	c:RegisterEffect(e1)
 end
 function c59797187.target(e,tp,eg,ep,ev,re,r,rp,chk)
-	if chk==0 then return e:GetHandler():GetBattleTarget():IsRelateToBattle() end
-	Duel.SetOperationInfo(0,CATEGORY_POSITION,e:GetHandler():GetBattleTarget(),1,0,0)
+	local tg=e:GetHandler():GetBattleTarget()
+	if chk==0 then return tg and tg:IsRelateToBattle() end
+	Duel.SetOperationInfo(0,CATEGORY_POSITION,tg,1,0,0)
 end
 function c59797187.operation(e,tp,eg,ep,ev,re,r,rp)
 	local bc=e:GetHandler():GetBattleTarget()

script/c6178850.lua

@@ -47,8 +47,10 @@ function c6178850.value(e,c)
 	return Duel.GetFieldGroupCount(e:GetHandlerPlayer(),0,LOCATION_MZONE)*300
 end
 function c6178850.destg(e,tp,eg,ep,ev,re,r,rp,chk)
-	if chk==0 then return not e:GetHandler():IsStatus(STATUS_DESTROY_CONFIRMED)
-		and e:GetHandler():GetEquipTarget():IsReason(REASON_BATTLE) end
+	local c=e:GetHandler()
+	local tg=c:GetEquipTarget()
+	if chk==0 then return c and not c:IsStatus(STATUS_DESTROY_CONFIRMED)
+		and tg and tg:IsReason(REASON_BATTLE) end
 	return Duel.SelectYesNo(tp,aux.Stringid(6178850,0))
 end
 function c6178850.desop(e,tp,eg,ep,ev,re,r,rp)

script/c69954399.lua

@@ -87,7 +87,7 @@ function c69954399.destg(e,tp,eg,ep,ev,re,r,rp,chk)
 end
 function c69954399.desop(e,tp,eg,ep,ev,re,r,rp)
 	local ec=e:GetHandler():GetEquipTarget()
-	if ec:IsRelateToEffect(e) and Duel.Destroy(ec,REASON_EFFECT)~=0 then
+	if ec and ec:IsRelateToEffect(e) and Duel.Destroy(ec,REASON_EFFECT)~=0 then
 		Duel.RaiseSingleEvent(e:GetHandler(),69954400,e,0,0,0,0)
 	end
 end

script/c73578229.lua

@@ -42,7 +42,7 @@ function c73578229.adjustop(e,tp,eg,ep,ev,re,r,rp)
 	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,LOCATION_MZONE,LOCATION_MZONE,nil)
 	local ag=g:GetMaxGroup(Card.GetAttack)
 	local preg=e:GetLabelObject()
-	if ag:Equal(preg) then return end
+	if ag and ag:Equal(preg) then return end
 	preg:Clear()
 	preg:Merge(ag)
 	Duel.AdjustInstantly(e:GetHandler())

script/c75292259.lua

@@ -11,7 +11,7 @@ end
 function c75292259.atcon(e,tp,eg,ep,ev,re,r,rp)
 	local c=e:GetHandler()
 	local bc=c:GetBattleTarget()
-	return c==Duel.GetAttacker() and bc:IsRelateToBattle()
+	return c==Duel.GetAttacker() and bc and  bc:IsRelateToBattle()
 		and bc:GetBattlePosition()==POS_FACEUP_ATTACK and c:IsChainAttackable(3)
 		
 end

script/c81426505.lua

@@ -26,7 +26,11 @@ function c81426505.filter3(c)
 	return c:IsFacedown() and c:IsDestructable()
 end
 function c81426505.destg(e,tp,eg,ep,ev,re,r,rp,chk)
-	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsDestructable,tp,0,LOCATION_ONFIELD,1,nil) end
+	if chk==0 then return 
+		Duel.IsExistingMatchingCard(c81426505.filter1,tp,0,LOCATION_MZONE,1,nil) or
+		Duel.IsExistingMatchingCard(c81426505.filter2,tp,0,LOCATION_ONFIELD,1,nil) or
+		Duel.IsExistingMatchingCard(c81426505.filter3,tp,0,LOCATION_SZONE,1,nil)
+	end
 	local t={}
 	local p=1
 	if Duel.IsExistingMatchingCard(c81426505.filter1,tp,0,LOCATION_MZONE,1,nil) then t[p]=aux.Stringid(81426505,0) p=p+1 end

script/c85562745.lua

@@ -19,7 +19,7 @@ function c85562745.initial_effect(c)
 	c:RegisterEffect(e2)
 end
 function c85562745.con(e,tp,eg,ep,ev,re,r,rp)
-	return ep~=tp and bit.band(r,REASON_BATTLE)==0 and re:GetHandler():GetCode()~=85562745
+	return ep~=tp and bit.band(r,REASON_BATTLE)==0 and re and re:GetHandler():GetCode()~=85562745
 end
 function c85562745.tg(e,tp,eg,ep,ev,re,r,rp,chk)
 	if chk==0 then return e:GetHandler():IsRelateToEffect(e) end

script/c85668449.lua

@@ -44,6 +44,7 @@ function c85668449.lrcon(e,tp,eg,ep,ev,re,r,rp)
 	if tp~=ep then return false end
 	local lp=Duel.GetLP(ep)
 	if lp<=ev then return false end
+	if not re then return false end
 	local rc=re:GetHandler()
 	return rc:IsRace(RACE_PSYCHO)
 end

script/c94585852.lua

@@ -32,6 +32,7 @@ function c94585852.initial_effect(c)
 	c:RegisterEffect(e4)
 end
 function c94585852.repcon(e,tp,eg,ep,ev,re,r,rp)
+	if not re then return false end
 	local rc=re:GetHandler()
 	return Duel.GetCurrentPhase()==PHASE_STANDBY and rc:IsSetCard(0x45) and rc:IsType(TYPE_MONSTER)
 end

script/c99594764.lua

@@ -25,6 +25,7 @@ function c99594764.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
 end
 function c99594764.thop(e,tp,eg,ep,ev,re,r,rp)
 	local eqc=e:GetHandler():GetEquipTarget()
+	if not eqc then return end
 	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
 	local g=Duel.SelectMatchingCard(tp,c99594764.filter,tp,LOCATION_DECK,0,1,1,nil,eqc:GetRace(),eqc:GetAttribute())
 	if g:GetCount()>0 then