Well it appears that SoE changed the loot window with out any advanced warning. I am including the diff of the eq2ui_inventory_loot.xml file that changed.
Quick Summary:
- Added version="2.0.0" to the top level <page> element
- Added 3 new buttons to the loot windw, not visible by default, NBGDecline, NBGGreed, NBGNeed
- Changed the numeric Identifier for teh regular Decline button
Also look at the eq2ui_popup_groupoptions.xml it appears that they played with that window too adding another selection for Tier ( I gues NBG starting Tier but not sure)