Error the first time i cast a spell.

[cokedrivers]

Evertime just after login I get tis error when I cast a spell, weather its to hearth or mount or any thing else as long as it is a castable spell it throws this error.

But if I press close the next time I cast it shows no error.

Here is the error:

Message: C stack overflow
Time: 03/11/14 09:49:33
Count: 1
Stack: [C]: in function `SetWidth'
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:29: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:17>
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:107: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:105>
[C]: in function `SetWidth'
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:29: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:17>
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:107: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:105>
[C]: in function `SetWidth'
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:29: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:17>
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:107: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:105>
[C]: in function `SetWidth'
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:29: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:17>
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:107: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:105>
...
[C]: in function `SetWidth'
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:29: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:17>
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:107: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:105>
[C]: in function `SetWidth'
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:29: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:17>
Interface\AddOns\BasicUI\Modules\General\Castbar.lua:107: in function <Interface\AddOns\BasicUI\Modules\General\Castbar.lua:105>
[C]: in function `SetValue'
Interface\FrameXML\CastingBarFrame.lua:279: in function <Interface\FrameXML\CastingBarFrame.lua:268>
[C]: in function `CastingBarFrame_OnUpdate'
[string "*:OnUpdate"]:1: in function <[string "*:OnUpdate"]:1>

Locals: (*temporary) = CastingBarFrame {
 0 = <userdata>
 showTradeSkills = true
 holdTime = 0
 d = <table> {
 }
 border = CastingBarFrameBorder {
 }
 unit = "player"
 df = CastbarCastingBarFrame {
 }
 showCastbar = true
 value = 0.016000000759959
 l = true
 icon = CastingBarFrameIcon {
 }
 barSpark = CastingBarFrameSpark {
 }
 timer = <unnamed> {
 }
 castID = 52
 barFlash = CastingBarFrameFlash {
 }
 maxValue = 1.5
 text = CastingBarFrameText {
 }
 name = <unnamed> {
 }
 lag = <unnamed> {
 }
 Show = <function> defined =[C]:-1
 borderShield = CastingBarFrameBorderShield {
 }
 flash = 1
 showShield = false
 casting = 1
 update = 0.1
 reset = true
}
(*temporary) = 240
(*temporary) = 0.016000000759959
(*temporary) = <function> defined =[C]:-1
(*temporary) = <function> defined @Interface\AddOns\BasicUI\Modules\General\Castbar.lua:105
(*temporary) = CastingBarFrame {
 0 = <userdata>
 showTradeSkills = true
 holdTime = 0
 d = <table> {
 }
 border = CastingBarFrameBorder {
 }
 unit = "player"
 df = CastbarCastingBarFrame {
 }
 showCastbar = true
 value = 0.016000000759959
 l = true
 icon = CastingBarFrameIcon {
 }
 barSpark = CastingBarFrameSpark {
 }
 timer = <unnamed> {
 }
 castID = 52
 barFlash = CastingBarFrameFlash {
 }
 maxValue = 1.5
 text = CastingBarFrameText {
 }
 name = <unnamed> {
 }
 lag = <unnamed> {
 }
 Show = <function> defined =[C]:-1
 borderShield = CastingBarFrameBorderShield {
 }
 flash = 1
 showShield = false
 casting = 1
 update = 0.1
 reset = true
}
(*temporary) = 0.016000000759959

Here is my castbar.lua

local B, C, DB = unpack(select(2, ...)) -- Import:  B - function; C - config; DB - Database
 
if C['castbar'].enable ~= true then return end
 
--[[
 
    All Credit for Castbar.lua goes to thek.
    thek: Castbar = [url]http://www.wowinterface.com/downloads/info11334-thekCastbar.html[/url].
    Edited by Cokedriver.
    
]]
 
local d = {};
local find = string.find;
local floor = math.floor;
 
local function Set(a, k)
    a:SetFrameLevel(_G[k]:GetFrameLevel() - 1);
    if find(k, "MirrorTimer") then
        _G[k.."StatusBar"]:SetStatusBarColor(B.ccolor.r, B.ccolor.g, B.ccolor.b);
        _G[k.."StatusBar"]:SetWidth(240);
        _G[k.."StatusBar"]:SetHeight(24);
        _G[k]:ClearAllPoints();
        _G[k]:SetPoint("TOPLEFT", a, "TOPLEFT", B.scale(_G[k].d.x), -B.scale(_G[k].d.y));
        _G[k.."StatusBar"]:ClearAllPoints();
        _G[k.."StatusBar"]:SetPoint("TOPLEFT", a, "TOPLEFT", B.scale(5), -B.scale(_G[k].d.y));
    else
        _G[k]:SetStatusBarColor(B.ccolor.r, B.ccolor.g, B.ccolor.b);
        _G[k]:SetWidth(240);
        _G[k]:SetHeight(24);
        _G[k]:ClearAllPoints();
        _G[k]:SetPoint("TOPLEFT", a, "TOPLEFT", B.scale(_G[k].d.x), -B.scale(_G[k].d.y))
    end;
    if C['castbar'][k].enableLag then
        local d, u, l = GetNetStats();
        local min, max = _G[k]:GetMinMaxValues();
        local lv = ( l / 1000 ) / ( max - min );
        if ( lv < 0 ) then lv = 0; elseif ( lv > 1 ) then lv = 1 end;
        if ( _G[k].channeling ) then
            _G[k].lag:ClearAllPoints();
            _G[k].lag:SetPoint("LEFT", _G[k], "LEFT", 0, 0);
        else
            _G[k].lag:ClearAllPoints();
            _G[k].lag:SetPoint("RIGHT", _G[k], "RIGHT", 0, 0);
        end;
        _G[k].lag:SetWidth(_G[k]:GetWidth() * lv);
    end
end;
 
if C['castbar']["TargetFrameSpellBar"].enable then
    function Target_Spellbar_AdjustPosition()
        Set(_G["TargetFrameSpellBar"].df, "TargetFrameSpellBar");
    end;
end;
if C['castbar']["FocusFrameSpellBar"].enable then
    function Focus_Spellbar_AdjustPosition()
        Set(_G["FocusFrameSpellBar"].df, "FocusFrameSpellBar");
    end;
end
 
for k, _ in pairs(C['castbar']) do
    if (k ~="enable" and C['castbar'][k].enable) then
        local a = CreateFrame("Frame", "Castbar"..k, UIParent);
        d.w, d.h, d.x, d.y = nil, nil, nil, nil;
 
        _G[k.."Border"]:SetTexture("");
        _G[k.."Text"]:ClearAllPoints("");
        _G[k.."Text"]:SetFont(C['media'].fontNormal, C["castbar"][k].fontSize, "");
 
        if find(k, "MirrorTimer") then
            d.w = 240 + (5 * 2);
            d.h = 24 + (5 * 2);
            d.x = 5;
            d.y = 5;
            
            _G[k.."Text"]:SetPoint("CENTER", k, -10, 2);
            _G[k.."StatusBar"]:SetStatusBarTexture(C['castbar'].statusbar);
        else
            d.w = 240 + 24 + (5 * 2) + 5;
            d.h = 24 + (5 * 2);
            d.x = 24 + 5 + 5;
            d.y = 5;
            
            _G[k.."Text"]:SetPoint(C['castbar'][k].textPosition);
            _G[k]:SetStatusBarTexture(C['castbar'].statusbar);
            _G[k.."Flash"].Show = _G[k.."Flash"].Hide;
            _G[k.."Spark"].Show = _G[k.."Spark"].Hide;
            
            if _G[k.."BorderShield"] then
                _G[k.."BorderShield"].Show = _G[k.."BorderShield"].Hide;
            end;
            
            if _G[k.."Icon"] then
                _G[k.."Icon"]:Show();
                _G[k.."Icon"]:ClearAllPoints();
                _G[k.."Icon"]:SetPoint("LEFT", _G[k], -27, 0);
                _G[k.."Icon"]:SetWidth(23);
                _G[k.."Icon"]:SetHeight(23);
                _G[k.."Icon"]:SetTexCoord(.08, .92, .08, .92);
            end;
            
            _G[k]:HookScript("OnSizeChanged", function() 
                _G[k].reset = true;
            end);
            _G[k]:HookScript("OnValueChanged", function()
                if _G[k].reset then
                    Set(a, k);
                    _G[k].reset = false;
                end;
            end);
            
            if C['castbar'][k].enableLag then
                _G[k].lag = _G[k]:CreateTexture(nil, "BACKGROUND")
                _G[k].lag:SetHeight(24)
                _G[k].lag:SetWidth(0)
                _G[k].lag:SetPoint("RIGHT", _G[k], "RIGHT", 0, 0)
                _G[k].lag:SetTexture(1, 0, 0, 1)
            end;
        end;    
             
        if C['castbar'][k].enableTimer then
            _G[k].timer = _G[k]:CreateFontString(nil);
            _G[k].timer:SetFont(C['media'].fontNormal, C['media'].fontSize, "");
            _G[k].timer:SetPoint("RIGHT", _G[k], "RIGHT", -5, 0);
            _G[k].update = .1;
        end;
        
        a:SetPoint(C['castbar'][k].relAnchor,"UIParent",C['castbar'][k].selfAnchor, B.scale(C['castbar'][k].offSetX),B.scale(C['castbar'][k].offSetY))
            
        a:SetWidth(d.w); a:SetHeight(d.h);
        a:SetBackdropColor(.1, .1, .1, .95);
        a:SetBackdrop({
            bgFile = C['castbar'].background,
            edgeFile = C['castbar'].border,
            tile = true, tileSize = 16, edgeSize = 15,
            insets = {left = 3, right = 3, top = 3, bottom = 3}
        })
        if C['general'].classcolor ~= true then
            a:SetBackdropBorderColor(C['general'].color.r,C['general'].color.g,C['general'].color.b)
        else
            a:SetBackdropBorderColor(B.ccolor.r, B.ccolor.g, B.ccolor.b)
        end
        a:SetParent(_G[k]);
        a:SetMovable(true);
        a:EnableMouse(false);
        a:RegisterForDrag("LeftButton");
        a:SetScript("OnDragStart", function(self) self:StartMoving() end);
        a:SetScript("OnDragStop", function(self) self:StopMovingOrSizing() end);
        a.name = a:CreateFontString(nil, "OVERLAY");
        a.name:SetFont(C['media'].fontNormal, C['media'].fontSize, "");
        a.name:SetPoint("CENTER", a);
        _G[k].d = d; _G[k].df = a; _G[k].name = a.name; _G[k].l = true;
       
        hooksecurefunc(_G[k], "Show", function() Set(a, k) end);
    end;
end;
 
hooksecurefunc("CastingBarFrame_OnUpdate", function(self, elapsed)
    if not self.timer then return end
    if self.update and self.update < elapsed then
        if self.casting then
            self.timer:SetText(format("(%.1f)", max(self.maxValue - self.value, 0)))
        elseif self.channeling then
            self.timer:SetText(format("(%.1f)", max(self.value, 0)))
        else
            self.timer:SetText("")
        end
        self.update = .1
    else
        self.update = self.update - elapsed
    end
end)
UIPARENT_MANAGED_FRAME_POSITIONS["CastingBarFrame"] = nil;

Here is my options for the castbar:

------------------
--Castbar Options
------------------
DB["castbar"] = {   
    ["enable"] = true,
    ["border"] = "Blizzard Tooltip",
    ["background"] = "Blizzard Dialog Background Dark",
    ["statusbar"] = "Blizzard",
    
 
    ["CastingBarFrame"] = {
        ["enable"] = true,
        ["fontSize"] = 18,
        ["textPosition"] = "CENTER",
        ["enableLag"] = true,
        ["enableTimer"] = true,
        ["selfAnchor"] = "BOTTOM",
        ["relAnchor"] = "BOTTOM",
        ["offSetX"] = 0,
        ["offSetY"] = 175,
    },
    ["TargetFrameSpellBar"] = {
        ["enable"] = false,
        ["fontSize"] = 18,
        ["textPosition"] = "CENTER",
        ["enableLag"] = true,
        ["enableTimer"] = true,
        ["selfAnchor"] = "TOP",
        ["relAnchor"] = "TOP",
        ["offSetX"] = 0,
        ["offSetY"] = -250,
    },
    ["FocusFrameSpellBar"] = {
        ["enable"] = true,
        ["fontSize"] = 18,
        ["textPosition"] = "CENTER",
        ["enableLag"] = true,
        ["enableTimer"] = true,
        ["selfAnchor"] = "TOP",
        ["relAnchor"] = "TOP",
        ["offSetX"] = 0,
        ["offSetY"] = -165,
    },
    ["MirrorTimer1"] = {
        ["enable"] = true,
        ["fontSize"] = 18,
        ["enableTimer"] = true,
        ["selfAnchor"] = "TOP",
        ["relAnchor"] = "TOP",
        ["offSetX"] = 0,
        ["offSetY"] = -75,
    },
    ["PetCastingBarFrame"] = {
        ["enable"] = true,
        ["fontSize"] = 18,
        ["textPosition"] = "CENTER",
        ["enableTimer"] = true,
        ["selfAnchor"] = "BOTTOM",
        ["relAnchor"] = "BOTTOM",
        ["offSetX"] = 0,
        ["offSetY"] = 200,
    },
}

And finally here is the config I use to switch from DB to C:

----------------------------------------------------------------------------
-- This Module loads new user settings if BasicUI_Config is loaded
----------------------------------------------------------------------------
local B, C, DB = unpack(select(2, ...)) -- Import:  B - function; C - config; DB - Database
 
--Convert default database
for group,options in pairs(DB) do
    if not C[group] then C[group] = {} end
    for option, value in pairs(options) do
        C[group][option] = value
    end
end
 
if IsAddOnLoaded("BasicUI_Config") then
    local BasicUIConfig = LibStub("AceAddon-3.0"):GetAddon("BasicUIConfig")
    BasicUIConfig:Load()
 
    --Load settings from BasicUIConfig database
    for group, options in pairs(BasicUIConfig.db.profile) do
        if C[group] then
            for option, value in pairs(options) do
                C[group][option] = value
            end
        end
    end
        
    B.SavePath = BasicUIConfig.db.profile
end

I'm not to sure as to why the "Set" function seems to be throwing a error.

Any help would be great.

Thanks
Coke

[Vrul]

Try changing:

            _G[k]:HookScript("OnValueChanged", function()
                if _G[k].reset then
                    Set(a, k);
                    _G[k].reset = false;
                end;
            end);

to:

            _G[k]:HookScript("OnValueChanged", function(self)
                if self.reset and not self.reseting then
                    self.reseting = true
                    Set(a, k)
                    self.reseting = nil
                    self.reset = nil
                end
            end)

[Duugu]

My first guess would be this part:

102.            _G[k]:HookScript("OnSizeChanged", function() 
103.                _G[k].reset = true;
104.            end);
 
105.            _G[k]:HookScript("OnValueChanged", function()
106.                if _G[k].reset then
107.                    Set(a, k);
108.                    _G[k].reset = false;
109.                end;
110.            end);

You're running into an infinite loop. You are calling Set() on OnSizeChanged ,and within Set() you do things like _G[k.."StatusBar"]:SetWidth(240); ... which fires OnSizeChanged, which is calling Set() ... aso.

As far as I can remember at some point the game engine does stop those infinite loops and ignores the code then. That's why the error is only thrown once.

I'm absolutly not sure if this is the problem or if my description is correct. But it could be a point to start investigating.

[cokedrivers]

Originally Posted by Vrul Try changing: _G[k]:HookScript("OnValueChanged", function() if _G[k].reset then Set(a, k); _G[k].reset = false; end; end); to: _G[k]:HookScript("OnValueChanged", function(self) if self.reset and not self.reseting then self.reseting = true Set(a, k) self.reseting = nil self.reset = nil end end)

This worked perfectly no more errors.

Also I am following Phanx's advice and now have installed Bugsack to help me and others when errors occur.

Thanks
Coke