HydraUI/Elements/GUI/GUI.lua:1385: attempt to call global 'GetMouseFocus'

[repsejnworb]

Just found this addon and wanted to give it a go. But constantly spammed with the following error:

11x HydraUI/Elements/GUI/GUI.lua:1385: attempt to call global 'GetMouseFocus' (a nil value)
[string "@HydraUI/Elements/GUI/GUI.lua"]:1385: in function `?'
[string "@HydraUI/Elements/GUI/GUI.lua"]:1069: in function <HydraUI/Elements/GUI/GUI.lua:1067>

Locals:
self = HydraUI GUI {
 Loaded = true
 RightEdge = Texture {
 }
 LoadCalls = <table> {
 }
 NumShownButtons = 18
 ScrollBar = Slider {
 }
 FadeOut = <table> {
 }
 TopEdge = Texture {
 }
 Name = "GUI"
 BottomRightCorner = Texture {
 }
 LeftEdge = Texture {
 }
 TopLeftCorner = Texture {
 }
 ButtonQueue = <table> {
 }
 FirstToggle = true
 Buttons = <table> {
 }
 Widgets = <table> {
 }
 Offset = 1
 TotalSelections = 20
 ScrollDown = Frame {
 }
 ScrollUp = Frame {
 }
 MenuParent = Frame {
 }
 Header = Frame {
 }
 Fader = <table> {
 }
 ScaleOut = <table> {
 }
 FadeIn = <table> {
 }
 ScaleIn = <table> {
 }
 Categories = <table> {
 }
 backdropInfo = <table> {
 }
 Center = Texture {
 }
 BottomLeftCorner = Texture {
 }
 WidgetID = <table> {
 }
 ScrollButtons = <table> {
 }
 BottomEdge = Texture {
 }
 TopRightCorner = Texture {
 }
 BlackTexture = Texture {
 }
 CloseButton = Frame {
 }
}
key = "LALT"
state = 1
(*temporary) = nil
(*temporary) = "attempt to call global 'GetMouseFocus' (a nil value)"