AnchorFill error upon initial group creation...

[BornDownUnder]

I am currently working on updating WarLegend Group Frames to current API, etc. for re-release once I get hold of Lyeos...
So far I have managed to iron out everything to working order, with a helping hand on a couple of minor issues (Thank you again Garkin & Minceraft!)

I'm completely stumped on this one issue that I just can't get around... Every initial group creation per session the anchorfill for the background throws an error, once a reloadui is done, all is fine and working perfectly until next session or relog.

Here is the code if someone has any ideas as to how to resolve this one last issue:

Warning: Spoiler

local function WLGF_ManageControl(num)
	local ctrl   = "ZO_GroupUnitFramegroup"
	local frame  = _G[ctrl..num]
	local name   = _G[ctrl..num.."Name"]
	local hp_bar = _G[ctrl..num.."Hp"]
	local bg 	 = _G[ctrl..num.."Background"]
	local Ucount = 0
	local owner  = "group"..num

	local edge_tex 	 = "EsoUI/Art/Tooltips/UI-Border.dds"
	local center_tex = "EsoUI/Art/Tooltips/UI-TooltipCenter.dds"

	if (WLGF["Anchor_group"..num] == nil) then
		WLGF["Anchor_group"..num] = Chain(WINDOW_MANAGER:CreateTopLevelWindow("WLGF_Anchor_group"..num))
			:SetDimensions(WLGF_SAVE.MW_width - 30, WLGF_SAVE.Bars_H + 25)
			:SetMouseEnabled(true)
			:SetHandler("OnMouseUp", function(self, button) WLGF_RightClick_Click(button, owner) end)
		.__END

		WLGF["Anchor_BG"..num] = Chain(WINDOW_MANAGER:CreateControl("WLGF_Anchor_BG"..num, hp_bar, CT_BACKDROP))
			:SetAnchorFill(WLGF["Anchor_group"..num])
			:SetCenterColor(1,1,1,0.5)
			:SetHidden (true)
		.__END

		WLGF["HP_Text_group"..num] = Chain(WINDOW_MANAGER:CreateControl("WLGF_HP_Text_group"..num, hp_bar, CT_LABEL ))
			:SetFont("WarLegendGroupFrame/fonts/"..WLGF_SAVE.HPT_font..".ttf|"..WLGF_SAVE.HPT_size.."|soft-shadow-thick")
			:SetDrawLayer(4)
			:SetColor(WLGF_SAVE.TC[1],WLGF_SAVE.TC[2],WLGF_SAVE.TC[3])
			:SetAnchor(RIGHT, hp_bar, RIGHT, -25,0)
		.__END

		WLGF["HP_Perc_group"..num] = Chain(WINDOW_MANAGER:CreateControl("WLGF_HP_Perc_group"..num, hp_bar, CT_LABEL ))
			:SetFont("WarLegendGroupFrame/fonts/"..WLGF_SAVE.HPP_font..".ttf|"..WLGF_SAVE.HPP_size.."|soft-shadow-thick")
			:SetDrawLayer(4)
			:SetColor(WLGF_SAVE.PC[1],WLGF_SAVE.PC[2],WLGF_SAVE.PC[3])
			:SetAnchor(LEFT, hp_bar, RIGHT, 10,0)
		.__END

Many thanks in advance if someone can throw some ideas/suggestions which lead to squashing this one last issue.

[merlight]

If I'm not mistaken, unit frames are created as needed, not immediately upon load. I think you should use:

local frameObj = UNIT_FRAMES:GetFrame("group"..num)
local frame = frameObj.frame -- added in edit
local name = frameObj.nameLabel
local hp_bar = frameObj.healthBar
-- etc

[BornDownUnder]

Originally Posted by merlight If I'm not mistaken, unit frames are created as needed, not immediately upon load. I think you should use: local frameObj = UNIT_FRAMES:GetFrame("group"..num) local frame = frameObj.frame -- added in edit local name = frameObj.nameLabel local hp_bar = frameObj.healthBar -- etc

Thanks Merlight, I'll have to implement the change & test in a few days' time.