Just a note on the ExtraActionButton, I had the same problem as others using 5.07.24 and 5.07.25 in DS with Ultraxion, so I installed the BetterExtraActionButton addon and it is working fine now. I ran DS last night (1st of Sept 2012) with nUI 5.07.25 and it worked as expected. The /nui movers command also allows you to move the BetterExtraActionButton so it doesn't sit on top of the action bars in nUI.
So in my long-winded way i'm saying that BetterExtraActionButton is still a workaround for the Ultraxion button problem.
