Help with RemoteFunctions and RemoteEvents?

So I am using RemoteEvents to do things to a character, such as change their appearance(with FilteringEnabled). Everything works in solo, except, that the events don't run in Server. One part of the script, since none of it works in server:

-- Inside server script
local event = Instance.new("RemoteEvent")
event.Parent = game.workspace:WaitForChild('Configuration'):WaitForChild('Events')
event.Name = "ApplyAppearance"
event.OnServerEvent:connect(function(player,arguments)
	char = game.workspace:WaitForChild(player.Name)
	print('Event Fired')
	charParts = char:GetChildren()
	for i = 1,#charParts do
		if charParts[i].className == 'Pants' or charParts[i].className == 'Shirt' or charParts[i].className == 'ShirtGraphic' or charParts[i].className == 'Hat' or charParts[i].className == 'CharacterMesh' then
			charParts[i]:Remove()
		elseif charParts[i].className == 'Humanoid' then
			charParts[i].WalkSpeed = arguments[16]
			charParts[i].Name = tostring(arguments[4])
			charParts[i].Health = arguments[3]
			charParts[i].MaxHealth = arguments[2]
		elseif charParts[i].Name == 'Torso' then
			if charParts[i]:FindFirstChild('roblox') then
				charParts[i]:FindFirstChild('roblox'):remove()
			end
		end
	end
	shirt = Instance.new('Shirt',char)
	shirt.ShirtTemplate = 'rbxassetid://' .. tonumber(arguments[7])
	pants = Instance.new('Pants',char)
	pants.PantsTemplate = 'rbxassetid://' .. tonumber(arguments[8])
	char:WaitForChild('Animate'):WaitForChild('idle'):WaitForChild('Animation1').AnimationId = 'rbxassetid://' .. tonumber(arguments[5])
	char:WaitForChild('Animate'):WaitForChild('idle'):WaitForChild('Animation2').AnimationId = 'rbxassetid://' .. tonumber(arguments[6])
	char:FindFirstChild('Head'):FindFirstChild('face').Texture = 'rbxassetid://' .. tonumber(arguments[9])
	if not char:FindFirstChild('Assassin Hat') then
		hatPart = Instance.new('Part',char)
		hatPart.Name = 'Assassin Hat'
		hatPart.CanCollide = false
		char:FindFirstChild('Head').CanCollide = false
		hatPart.Size = Vector3.new(1,1,1)
		hatPartMesh = Instance.new('SpecialMesh',hatPart)
		hatPartMesh.MeshId = 'rbxassetid://' .. tonumber(arguments[10])
		hatPartMesh.TextureId = 'rbxassetid://' .. tonumber(arguments[11])
		hatPartMesh.Offset = Vector3.new(0,0.1,0.1)
		hatPartWeld = Instance.new('Weld',char:FindFirstChild('Head'))
		hatPartWeld.Part0 = char:FindFirstChild('Head')
		hatPartWeld.Part1 = hatPart
		hatPartWeld.C0 = CFrame.new(0,0,0)
		hatPartWeld.C1 = CFrame.new(0,0,0)
	end
	if not char:FindFirstChild('SwordPart') then
		swordPart = Instance.new('Part',char)
		swordPart.Name = 'SwordPart'
		swordPart.Size = Vector3.new(1, 0.8, 5)
		swordPart.CanCollide = false
		swordPartMesh = Instance.new('SpecialMesh',swordPart)
		swordPartMesh.MeshId = 'rbxassetid://' .. tonumber(arguments[12])
		swordPartMesh.TextureId = 'rbxassetid://' .. tonumber(arguments[13])
		swordPartMesh.Scale = Vector3.new(1.7,1.7,1.7)
		swordPartWeld = Instance.new('Weld',char:WaitForChild('Torso'))
		swordPartWeld.Part0 = char.Torso
		swordPartWeld.Part1 = swordPart
		swordPartWeld.C0 = CFrame.new(0,0,0)
		swordPartWeld.C1 = CFrame.new(1,-1,-2.5) * CFrame.Angles(0,1,-1.5)
	end
	if not char:FindFirstChild('PistolPart') then
		pistolPart = Instance.new('Part',char)
		pistolPart.Name = 'PistolPart'
		pistolPart.Size = Vector3.new(1, 2, 1)
		pistolPart.CanCollide = false
		pistolPartMesh = Instance.new('SpecialMesh',pistolPart)
		pistolPartMesh.MeshId = 'rbxassetid://' .. tonumber(arguments[14])
		pistolPartMesh.TextureId = 'rbxassetid://' .. tonumber(arguments[15])
		pistolPartMesh.Scale = Vector3.new(1.5, 1.5, 1.5)
		pistolPartWeld = Instance.new('Weld',char:WaitForChild('Torso'))
		pistolPartWeld.Part0 = char.Torso
		pistolPartWeld.Part1 = pistolPart
		pistolPartWeld.C0 = CFrame.new(0,0,0)
		pistolPartWeld.C1 = CFrame.new(0.6,0,1) * CFrame.Angles(1.5,4.7,0)
	end
end)

-- Inside Local Script

local appearance = game.workspace:WaitForChild('Configuration'):WaitForChild('Events'):WaitForChild("ApplyAppearance")

appearance:FireServer({char.Name,health,maxhealth,humname,Idle,Idle2,ShirtTexture,PantsTexture,
	FaceTexture,HatMesh,HatTexture,SwordMesh,SwordTexture,PistolMesh,PistolTexture,WalkSpeed})