somehow while using wbt and lootappraiser; the lootappraiser window cannot be moved and this error is showned in bugsack

25x WorldBossTimers\GUI.lua:396: attempt to index field 'window' (a nil value)
[string "@WorldBossTimers\GUI.lua"]:396: in function <WorldBossTimers\GUI.lua:395>

Locals:
this = {
0 =
}
(*temporary) = nil
(*temporary) = nil
(*temporary) = "attempt to index field 'window' (a nil value)"
self =

{
released = true
Rebuild = defined @WorldBossTimers\GUI.lua:171
UpdateContent = defined @WorldBossTimers\GUI.lua:216
UpdateWidth = defined @WorldBossTimers\GUI.lua:139
CyclicLabelResetTrigger = defined @WorldBossTimers\GUI.lua:201
RemoveLabel = defined @WorldBossTimers\GUI.lua:164
Restart = defined @WorldBossTimers\GUI.lua:44
InitPosition = defined @WorldBossTimers\GUI.lua:277
Show = defined @WorldBossTimers\GUI.lua:75
UpdatePosition = defined @WorldBossTimers\GUI.lua:261
NewBasicWindow = defined @WorldBossTimers\GUI.lua:324
height = 106
ShouldHide = defined @WorldBossTimers\GUI.lua:65
SetupAceGUI = defined @WorldBossTimers\GUI.lua:308
btn_req = {
}
Update = defined @WorldBossTimers\GUI.lua:250
ShouldShow = defined @WorldBossTimers\GUI.lua:52
btn_container = {
}
SaveGuiPoint = defined @WorldBossTimers\GUI.lua:288
CreateNewLabel = defined @WorldBossTimers\GUI.lua:112
CreateLabels = defined @WorldBossTimers\GUI.lua:40
btn_share = {
}
RecordPositioning = defined @WorldBossTimers\GUI.lua:299
LabelWidth = defined @WorldBossTimers\GUI.lua:108
visible = false
width = 200
Init = defined @WorldBossTimers\GUI.lua:36
AceGUI = {
}
ResetPosition = defined @WorldBossTimers\GUI.lua:303
New = defined @WorldBossTimers\GUI.lua:347
LockOrUnlock = defined @WorldBossTimers\GUI.lua:101
UpdateHeight = defined @WorldBossTimers\GUI.lua:128
CleanUpWidgetsAndRelease = defined @WorldBossTimers\GUI.lua:312
FreshKillTrigger = defined @WorldBossTimers\GUI.lua:187
Hide = defined @WorldBossTimers\GUI.lua:84
btn_opts = {
}
GetLabelText = defined @WorldBossTimers\GUI.lua:155
UpdateGUIVisibility = defined @WorldBossTimers\GUI.lua:93
}
GUI = {
released = true
Rebuild = defined @WorldBossTimers\GUI.lua:171
UpdateContent = defined @WorldBossTimers\GUI.lua:216
UpdateWidth = defined @WorldBossTimers\GUI.lua:139
CyclicLabelResetTrigger = defined @WorldBossTimers\GUI.lua:201
RemoveLabel = defined @WorldBossTimers\GUI.lua:164
Restart = defined @WorldBossTimers\GUI.lua:44
InitPosition = defined @WorldBossTimers\GUI.lua:277
Show = defined @WorldBossTimers\GUI.lua:75
UpdatePosition = defined @WorldBossTimers\GUI.lua:261
NewBasicWindow = defined @WorldBossTimers\GUI.lua:324
height = 106
ShouldHide = defined @WorldBossTimers\GUI.lua:65
SetupAceGUI = defined @WorldBossTimers\GUI.lua:308
btn_req = {
}
Update = defined @WorldBossTimers\GUI.lua:250
ShouldShow = defined @WorldBossTimers\GUI.lua:52
btn_container = {
}
SaveGuiPoint = defined @WorldBossTimers\GUI.lua:288
CreateNewLabel = defined @WorldBossTimers\GUI.lua:112
CreateLabels = defined @int