WowAce

Got this error when joining a group cross realm, using 4.2.1

1x [ADDON_ACTION_BLOCKED] AddOn 'ShadowedUnitFrames' tried to call the protected function 'SUFHeaderraid1UnitButton1:SetAttribute()'.
!BugGrabber\BugGrabber.lua:573: in function <!BugGrabber\BugGrabber.lua:573>
[C]: in function `SetAttribute'
ShadowedUnitFrames\modules\units.lua:540: in function <ShadowedUnitFrames\modules\units.lua:435>
[C]: ?
[C]: in function `SetAttribute'
FrameXML\SecureGroupHeaders.lua:203: in function <FrameXML\SecureGroupHeaders.lua:123>
FrameXML\SecureGroupHeaders.lua:488: in function `SecureGroupHeader_Update'
FrameXML\SecureGroupHeaders.lua:62: in function <FrameXML\SecureGroupHeaders.lua:60>

Locals:
InCombatSkipped