Retail
Dominos 10.0.0-Retail:

Message: Interface/FrameXML/SpellFlyout.lua:240: attempt to call method 'GetSpellFlyoutDirection' (a nil value)
Count: 2
Stack: Interface/FrameXML/SpellFlyout.lua:240: attempt to call method 'GetSpellFlyoutDirection' (a nil value)
[string "@Interface/FrameXML/SpellFlyout.lua"]:240: in function Toggle' [string "@Interface/FrameXML/SecureTemplates.lua"]:361: in function handler'
[string "@Interface/FrameXML/SecureTemplates.lua"]:690: in function <Interface/FrameXML/SecureTemplates.lua:672>
[string "@Interface/FrameXML/SecureTemplates.lua"]:704: in function <Interface/FrameXML/SecureTemplates.lua:697>
[string "@Interface/FrameXML/SecureTemplates.lua"]:746: in function `SecureActionButton_OnClick'
[string "@Interface/FrameXML/ActionButton.lua"]:1157: in function <Interface/FrameXML/ActionButton.lua:1127>
[string "=[C]"]: ?

Locals: self = SpellFlyout {
0 =
direction = "RIGHT"
isActionBar = true
MarkDirty = defined @Interface/SharedXML/LayoutFrame.lua:90
eventsRegistered = false
MarkClean = defined @Interface/SharedXML/LayoutFrame.lua:105
OnCleaned = defined @Interface/SharedXML/LayoutFrame.lua:114
Toggle = defined @Interface/FrameXML/SpellFlyout.lua:206
GetLayoutChildren = defined @Interface/SharedXML/LayoutFrame.lua:64
OnUpdate = defined @Interface/SharedXML/LayoutFrame.lua:84
GetAdditionalRegions = defined @Interface/SharedXML/LayoutFrame.lua:76
IsDirty = defined @Interface/SharedXML/LayoutFrame.lua:110
SetBorderSize = defined @Interface/FrameXML/SpellFlyout.lua:442
Layout = defined @Interface/SharedXML/LayoutFrame.lua:333
SetBorderColor = defined @Interface/FrameXML/SpellFlyout.lua:435
dirty = false
IsLayoutFrame = defined @Interface/SharedXML/LayoutFrame.lua:36
OnShow = defined @Interface/SharedXML/LayoutFrame.lua:32
Background = Frame {
}
AddLayoutChildren = defined @Interface/SharedXML/LayoutFrame.lua:48
IgnoreLayoutIndex = defined @Interface/SharedXML/LayoutFrame.lua:329
}
flyoutID = 9
parent = DominosActionButton10 {
CalculateAction = defined @Interface/FrameXML/SecureTemplates.lua:609
QuickKeybindButtonOnHide = defined @Interface/FrameXML/QuickKeybind.lua:11
FlyoutArrowContainer = Frame {
}
NewActionTexture = Texture {
}
RightDivider = Frame {
}
UpdateButtonArt = defined @Interface/FrameXML/ActionButton.lua:1227
QuickKeybindButtonOnLeave = defined @Interface/FrameXML/QuickKeybind.lua:33
OnDragStart = defined @Interface/FrameXML/ActionButton.lua:1164
OnReceiveDrag = defined @Interface/FrameXML/ActionButton.lua:1176
icon = DominosActionButton10Icon {
}
SlotArt = Texture {
}
AutoCastable = Texture {
}
UpdateState = defined @Interface/FrameXML/ActionButton.lua:497
SetShowCooldowns = defined @Interface/AddOns/Dominos/bars/actionBar/button.lua:82
UpdatePressAndHoldAction = defined @Interface/FrameXML/ActionButton.lua:340
HotKey = DominosActionButton10HotKey {
}
HighlightTexture = Texture {
}
UpdateOverlayGlow = defined @Interface/FrameXML/ActionButton.lua:682
GetPagedID = defined @Interface/FrameXML/ActionButton.lua:987
Update = defined @Interface/FrameXML/ActionButton.lua:378
UpdateShownInsecure = defined @Interface/AddOns/Dominos/bars/actionBar/button.lua:35
IconMask = MaskTexture {
}
SpellHighlightAnim = AnimationGroup {
}
OnLoad = defined @Interface/FrameXML/ActionButton.lua:279
PushedTexture = Texture {
}
SetTooltip = defined @Interface/FrameXML/ActionButton.lua:896
AutoCastShine = DominosActionButton10Shine {
}
UpdateUsable = defined @Interface/FrameXML/ActionButton.lua:503
UpdateFlash = defined @Interface/FrameXML/ActionButton.lua:991
GetShowGrid = defined @i

Thank you for continuing to work on Dominos. Incompetent UI/UX design on the internal team's part is just another reason we need competent addon developers.

This is a bug in blizzard's end that I cannot fix. My suggestion is to try the select addon as a workaround:

https://www.wowinterface.com/downloads/info11607-Select.html