50x FrameXML/SpellFlyout.lua:240: attempt to call method 'GetSpellFlyoutDirection' (a nil value)
[string "@FrameXML/SpellFlyout.lua"]:240: in function Toggle' [string "@FrameXML/SecureTemplates.lua"]:361: in function handler'
[string "@FrameXML/SecureTemplates.lua"]:690: in function <FrameXML/SecureTemplates.lua:672>
[string "@FrameXML/SecureTemplates.lua"]:704: in function <FrameXML/SecureTemplates.lua:697>
[string "@FrameXML/SecureTemplates.lua"]:746: in function `SecureActionButton_OnClick'
[string "@FrameXML/ActionButton.lua"]:1175: in function <FrameXML/ActionButton.lua:1145>
[string "=[C]"]: ?

Locals:
self = SpellFlyout {
0 =
isActionBar = true
MarkDirty = defined @SharedXML/LayoutFrame.lua:90
eventsRegistered = false
MarkClean = defined @SharedXML/LayoutFrame.lua:105
OnCleaned = defined @SharedXML/LayoutFrame.lua:114
Toggle = defined @FrameXML/SpellFlyout.lua:206
GetLayoutChildren = defined @SharedXML/LayoutFrame.lua:64
OnUpdate = defined @SharedXML/LayoutFrame.lua:84
GetAdditionalRegions = defined @SharedXML/LayoutFrame.lua:76
IsDirty = defined @SharedXML/LayoutFrame.lua:110
SetBorderSize = defined @FrameXML/SpellFlyout.lua:442
Layout = defined @SharedXML/LayoutFrame.lua:333
SetBorderColor = defined @FrameXML/SpellFlyout.lua:435
IsLayoutFrame = defined @SharedXML/LayoutFrame.lua:36
OnShow = defined @SharedXML/LayoutFrame.lua:32
Background = Frame {
}
AddLayoutChildren = defined @SharedXML/LayoutFrame.lua:48
IgnoreLayoutIndex = defined @SharedXML/LayoutFrame.lua:329
}
flyoutID = 103
parent = MultiBarBottomRightButton2 {
0 =
OnEnter = defined @FrameXML/ActionButton.lua:1200
FlyoutArrowContainer = Frame {
}
NewActionTexture = Texture {
}
RightDivider = Frame {
}
DoModeChange = defined @FrameXML/QuickKeybind.lua:95
UpdateButtonArt = defined @FrameXML/ActionButton.lua:1245
QuickKeybindButtonOnLeave = defined @FrameXML/QuickKeybind.lua:33
UpdateAction = defined @FrameXML/ActionButton.lua:357
OnReceiveDrag = defined @FrameXML/ActionButton.lua:1194
icon = MultiBarBottomRightButton2Icon {
}
SlotArt = Texture {
}
AutoCastable = Texture {
}
UpdateTooltip = defined @FrameXML/ActionButton.lua:914
UpdateState = defined @FrameXML/ActionButton.lua:494
UpdatePressAndHoldAction = defined @FrameXML/ActionButton.lua:340
HotKey = MultiBarBottomRightButton2HotKey {
}
HighlightTexture = Texture {
}
UpdateOverlayGlow = defined @FrameXML/ActionButton.lua:707
GetPagedID = defined @FrameXML/ActionButton.lua:1005
Update = defined @FrameXML/ActionButton.lua:373
ClearProfessionQuality = defined @FrameXML/ActionButton.lua:540
IconMask = MaskTexture {
}
SetPoint = defined =[C]:-1
SpellHighlightAnim = AnimationGroup {
}
OnLoad = defined @FrameXML/ActionButton.lua:279
PushedTexture = Texture {
}
SetTooltip = defined @FrameXML/ActionButton.lua:914
Count = MultiBarBottomRightButton2Count {
}
UpdateUsable = defined =[C]:-1
FlyoutBorderShadow = MultiBarBottomRightButton2FlyoutBorderShadow {
}
GetShowGrid = defined @FrameXML/ActionButton.lua:1227
SetButtonStateBase = defined =[C]:-1
UpdateHotkeys = defined @FrameXML/ActionButton.lua:303
rangeTimer = -1
Border = MultiBarBottomRightButton2Border {
}
Flash = MultiBarBottomRightButton2Flash {
}
index = 2
gwY = 0
gwBackdrop = Frame {
}
flashtime = 0
CalculateAction = defined @FrameXML/SecureTemplates.lua:609
OnUpdate = defined @FrameXML/ActionButton.lua:933
HasAction = defined @FrameXML/ActionButton.lua:490
QuickKeybindButtonSetTooltip = defined @FrameXML/QuickKeybind.lua:52
showMacroName = true
commandName = "MULTIACTIONBAR2BUTTON2"
SetButtonStateOverride = defined @FrameXML/ActionButton.lua:1140
QuickKeybindHighlightTexture = Texture {
}
OnDragStart = defined @FrameXML/ActionButton.lua:1182
changedColor = false
feedback_action = 50
QuickKeybindButtonOnEnter = defined @in

This Error also occurs on the Dragonflying tab - It's something specific with the 'SpellFlyOutTab'. that isn't working on the latest version of GW2 UI

This is a blizzard error, flout buttons only works on the main action bar, till they fix it