I just entered Ashran and got that error from SpartanUI:

1x [ADDON_ACTION_BLOCKED] AddOn 'SpartanUI_Artwork' tried to call the protected function 'CompactRaidFrame13:Show()'.
!BugGrabber\BugGrabber.lua:573: in function <!BugGrabber\BugGrabber.lua:573>
[C]: in function `Show'
FrameXML\CompactUnitFrame.lua:290: in function `CompactUnitFrame_UpdateVisible'
FrameXML\CompactUnitFrame.lua:248: in function `CompactUnitFrame_UpdateAll'
FrameXML\CompactUnitFrame.lua:100: in function <FrameXML\CompactUnitFrame.lua:47>


Locals:


Don't get it related to Jamba-Quest though...