Aptechka 

function Aptechka.UNIT_HEALTH(self, event, unit)
    if not Roster[unit] then return end
    for self in pairs(Roster[unit]) do
        local h,hm = UnitHealth(unit), UnitHealthMax(unit)
        self.vHealth = h
        self.vHealthMax = hm
        self.health:SetValue(h/hm*100)
        SetJob(unit,config.HealthDificitStatus, ((hm-h) > 1000) )
        
        if event then -- quickhealth calls this function without event
            if UnitIsDeadOrGhost(unit) then
                SetJob(unit, config.AggroStatus, false)
                local deadorghost = UnitIsGhost(unit) and config.GhostStatus or config.DeadStatus
                SetJob(unit, deadorghost, true)
                SetJob(unit,config.HealthDificitStatus, false )
                self.isDead = true
                if self.OnDead then self:OnDead() end
            else
                if self.isDead then
                    self.isDead = false
                    if self.OnAlive then self:OnAlive() end
                    Aptechka.ScanAuras(unit)
                    SetJob(unit, config.GhostStatus, false)
                    SetJob(unit, config.DeadStatus, false)
                end
            end
        end
        
		local heal = UnitGetIncomingHeals(unit)
        local threshold = config.incomingHealThreshold or 3000
        local showHeal = (heal and heal > threshold)
        if self.health.incoming then 
            self.health.incoming:SetValue( showHeal and self.health:GetValue()+(heal/UnitHealthMax(unit)*100) or 0)
        end
        if config.IncomingHealStatus then
            if showHeal then
                self.vIncomingHeal = heal
                SetJob(unit, config.IncomingHealStatus, true)
            else
                self.vIncomingHeal = 0
                SetJob(unit, config.IncomingHealStatus, false)
            end
        end
		
    end
end

if self.isDead then
     self.isDead = false
     if self.OnAlive then self:OnAlive() end
     Aptechka.ScanAuras(unit)
     SetJob(unit, config.GhostStatus, false)
     SetJob(unit, config.DeadStatus, false)
end

Message: Interface\AddOns\SuperClassic\UnitFrames.lua:26: attempt to concatenate a nil value
Time: 11/13/10 00:34:12
Count: 1
Stack: Interface\AddOns\SuperClassic\UnitFrames.lua:26: in function <Interface\AddOns\SuperClassic\UnitFrames.lua:19>
[C]: in function `Show'
Interface\AddOns\Aptechka\Aptechka.lua:757: in function <Interface\AddOns\Aptechka\Aptechka.lua:735>
Interface\AddOns\Aptechka\Aptechka.lua:532: in function <Interface\AddOns\Aptechka\Aptechka.lua:506>
[C]: in function `SetAttribute'
Interface\FrameXML\SecureGroupHeaders.lua:198: in function <Interface\FrameXML\SecureGroupHeaders.lua:115>
Interface\FrameXML\SecureGroupHeaders.lua:453: in function <Interface\FrameXML\SecureGroupHeaders.lua:379>
[C]: in function `Show'
Interface\AddOns\Aptechka\Aptechka.lua:154: in function `?'
Interface\AddOns\Aptechka\Aptechka.lua:4: in function <Interface\AddOns\Aptechka\Aptechka.lua:3>

Locals: self = <unnamed> {
 0 = <userdata>
 incoming = <unnamed> {
 }
 parent = NugRaid1UnitButton1 {
 }
 bg = <unnamed> {
 }
 SetJob = <function> defined @Interface\AddOns\AptechkaUserConfig\userconfig.lua:107
 jobs = <table> {
 }
}
(*temporary) = <function> defined =[C]:-1
(*temporary) = <unnamed> {
 0 = <userdata>
 incoming = <unnamed> {
 }
 parent = NugRaid1UnitButton1 {
 }
 bg = <unnamed> {
 }
 SetJob = <function> defined @Interface\AddOns\AptechkaUserConfig\userconfig.lua:107
 jobs = <table> {
 }
}
(*temporary) = nil
(*temporary) = "Background"
(*temporary) = nil
(*temporary) = 0.796875
(*temporary) = "attempt to concatenate a nil value"

    local powerbar = CreateFrame("StatusBar", nil, self)
	powerbar:SetWidth(5)
    powerbar:SetPoint("TOPRIGHT",self,"TOPRIGHT",0,0)
    powerbar:SetPoint("BOTTOMRIGHT",self,"BOTTOMRIGHT",0,0)
	powerbar:SetStatusBarTexture(texture)
    powerbar:SetMinMaxValues(0,100)
    powerbar.parent = self
    powerbar:SetOrientation("HORIZONTAL")
    powerbar.SetJob = SetJob_HealthBar
    powerbar.OnPowerTypeChange = PowerBar_OnPowerTypeChange

    local hp = CreateFrame("StatusBar", nil, self)
	--hp:SetAllPoints(self)
    hp:SetPoint("BOTTOMLEFT",self,"BOTTOMLEFT",0,0)
    hp:SetPoint("TOPRIGHT",self,"TOPRIGHT",0,0)
	hp:SetStatusBarTexture(texture)
    hp:SetMinMaxValues(0,100)
    hp:SetOrientation("HORIZONTAL")
    hp.parent = self
    hp.SetJob = SetJob_HealthBar
    --hp:SetValue(0)

	powerbar:SetHeight(5)
    powerbar:SetPoint("BOTTOMLEFT",self,"BOTTOMLEFT",0,0)
    powerbar:SetPoint("BOTTOMRIGHT",self,"BOTTOMRIGHT",0,0)