Nikon has updated ViewNX, mostly to fix things that come up with the new D700 and SB-900 (though three are some fixes that apply to other models as well. Meanwhile the WT-4 also gets a firmware update to update it with the new thumbnail selector (which was updated last week). As usual, Mac and Windows users need to go to different places, so just go to http://support.nikontech.com and use the Knowledge Database to find what you need.