[Phanx]

I don't provide any support or tutoring via PM, as that defeats the point of having a community forum, so I'm just replying here.

Originally Posted by Anja <link> that was my last update stand, thanks for your help!!

I rewrote your frame creation code using only Lua (no XML). Not tested in an actual raid, but the window shows up fine in-game with no errors. Remove the reference to Raidstring.xml in your TOC file, and replace the contents of your Lua file with this.

local f = CreateFrame("Frame", "Raidstring", UIParent)
f:SetPoint("CENTER")
f:SetSize(400, 125)
f:Hide()

f:SetBackdrop({
	bgFile = "Interface\\DialogFrame\\UI-DialogBox-Background", tileSize = 32, tile = true,
	edgeFile = "Interface\\DialogFrame\\UI-DialogBox-Border", edgeSize = 32,
	insets = { left = 11, right = 12, top = 12, bottom = 11 }
})

f.Header = f:CreateTexture(nil, "ARTWORK")
f.Header:SetPoint("CENTER", f, "TOP")
f.Header:SetSize(139, 40)
f.Header:SetTexture("Interface\\DialogFrame\\UI-DialogBox-Header")
f.Header:SetTexCoord(58/256, 196/256, 0, 39/64)

f.HeaderText = f:CreateFontString(nil, "OVERLAY", "GameFontNormal")
f.HeaderText:SetPoint("CENTER", f.Header)
f.HeaderText:SetText("Raidstring")

f:EnableMouse(true)
f:SetMovable(true)
f.TitleRegion = f:CreateTitleRegion()
f.TitleRegion:SetAllPoints(f.Header)

f.EditBox = CreateFrame("EditBox", "$parentEditBox", f, "InputBoxTemplate")
f.EditBox:SetPoint("TOP", f.Header, "BOTTOM")
f.EditBox:SetSize(300, 16)
f.EditBox:SetAltArrowKeyMode(false)
f.EditBox:SetAutoFocus(false)
f.EditBox:SetFontObject(GameFontHighlightSmall)
--f.EditBox:SetHistoryLines(0)
f.EditBox:SetMaxLetters(0) -- no limit

f.EditBox:SetScript("OnEnterPressed", function()
	f:Hide()
	f:SortRaid(self:GetText())
end)
f.EditBox:SetScript("OnEscapePressed", function()
	f:Hide()
end)

f.CloseButton = CreateFrame("Button", "$parentCloseButton", f, "OptionsButtonTemplate")
f.CloseButton:SetPoint("BOTTOM", 0, 20)
f.CloseButton:SetText(APPLY)
f.CloseButton:SetScript("OnClick", function()
	f:Hide()
	f:SortRaid(self:GetText())
end)

f:SetScript("OnHide", function()
	f.EditBox:ClearHistory()
end)

------------------------------------------------------------------------

local current, numInGroup = {}, {}

local function UpdateRaidState()
	wipe(numInGroup)
	wipe(current)
	for i = 1, GetNumGroupMembers() do
		local name, rank, subgroup, level, class, fileName, zone, online, isDead, role, isML = GetRaidRosterInfo(i)
		current[name] = { index = i, group = subgroup }
		numInGroup[subgroup] = (numInGroup[subgroup] or 0) + 1
	end
end

function f:SortRaid(str)
	if not str or strlen(str) == 0 or not IsInRaid() then
		return
	end
	if not UnitIsGroupLeader("player") and not UnitIsGroupAssistant("player") then
		return DEFAULT_CHAT_FRAME:AddMessage(format("%sRaidString:|r %s", NORMAL_FONT_COLOR_CODE, "You must be raid leader or promoted to sort the raid!"))
	end

	-- Get a snapshot of the current raid layout:
	UpdateRaidState()

	local wanted = {}
	-- Build a map of the desired raid layout:
	for name, group in string.gmatch(str, "([^&:]+):(%d+)") do
		-- Ignore named players not in the raid.
		if current[name] then
			wanted[name] = group
		end
	end

	-- Look for players not in the wanted group and move them:
	for name, group in pairs(wanted) do
		if current[name].group ~= group then
			if numInGroup[group] then
				if not numInGroup[group] or numInGroup[group] < 5 then
					-- Just move them:
					SetRaidSubgroup(current[name].index, group)
				else
					-- Look for someone to swap with:
					for xname, xdata in pairs(current) do
						if xdata.group == group and wanted[xname] ~= group then
							-- Do the swap:
							SwapRaidSubgroup(current[name].index, xdata.index)
							-- Update the snapshot:
							UpdateRaidState()
						end
					end
				end
			else
				SetRaidSubgroup(current[name].index, group)
			end
		end
	end
end

------------------------------------------------------------------------

SLASH_RAIDSTRING1 = "/rs"

SlashCmdList["RAIDSTRING"] = function()
	if not IsInRaid() then
		return
	end
	local name = UnitName("player")
	local realm = GetRealmName()
	local guild = IsInGuild and GetGuildInfo("player") or ""

	local xml = "<RaidInfo><Info>Raidassist</Info><Password>W2Any"..realm.."dEAv"..name.."2AxaS</Password><Realm>"..realm.."</Realm><Guild>"..guild.."</Guild><Name>"..name.."</Name><PlayerInfos>"
	for i = 1, GetNumGroupMembers() do
		local localizedClass, englishClass = UnitClass("raid"..i)
		local name, online = UnitName("raid"..i)
		xml = xml.."<key"..i.."><name>"..name.."</name><class>"..englishClass.."</class></key"..i..">"
	end
	xml = xml.."</PlayerInfos></RaidInfo>"

	f.EditBox:SetText(xml)
	f.EditBox:HighlightText()
	f:Show()
end

------------------------------------------------------------------------

SLASH_MAKERAID1 = "/rm"

SlashCmdList["MAKERAID"] = function()
	f:Show()
end