1x [ADDON_ACTION_FORBIDDEN] AddOn 'ClassicCastbars' tried to call the protected function 'AcceptBattlefieldPort()'.
!BugGrabber\BugGrabber.lua:519: in function <!BugGrabber\BugGrabber.lua:519>
[C]: in function AcceptBattlefieldPort' FrameXML\StaticPopup.lua:689: in function OnAccept'
FrameXML\StaticPopup.lua:5003: in function `StaticPopup_OnClick'
[string ":OnClick"]:1: in function <[string ":OnClick"]:1>

Should be fixed now in newest update.

thanks