fix bugs for classes that dont have any stances (yet)

ActionBarStates.lua

@@ -134,9 +134,11 @@ function module:GetStateOptionsTable()
 	
 	do
 		local defstancemap = self.DefaultStanceMap[playerclass]
-		for k,v in pairs(defstancemap) do
-			if not options.stances.args[v.id] then
-				options.stances.args[v.id] = createOptionGroup(k, v.id)
+		if defstancemap then
+			for k,v in pairs(defstancemap) do
+				if not options.stances.args[v.id] then
+					options.stances.args[v.id] = createOptionGroup(k, v.id)
+				end
 			end
 		end
 	end

ButtonBar.lua

@@ -146,6 +146,10 @@ function ButtonBar:UpdateButtonLayout()
 	local numbuttons = #buttons
 	local pad = self:GetPadding()
 	
+	-- bail out if the bar has no buttons, for whatever reason
+	-- (eg. stanceless class, or no stances learned yet, etc.)
+	if numbuttons == 0 then return end
+	
 	local Rows = self:GetRows()
 	local ButtonPerRow = math_floor(numbuttons / Rows + 0.5) -- just a precaution
 	Rows = math_floor(numbuttons / ButtonPerRow + 0.5)

StanceBar.lua

@@ -54,6 +54,7 @@ function StanceBarMod:SetupOptions()
 			name = "Stance Bar",
 			desc = "Configure  the Stance Bar",
 			childGroups = "tab",
+			disabled = function() return GetNumShapeshiftForms() == 0 end,
 		}
 	ActionBars.options.args["stance"].args = self.options.table
 end