A lot of comments coming back from folk who've downloaded the 64-bit update. First things first: if you use the Color Efex 3 plug-in with Capture NX2 you need the absolutely latest version of that (I believe that's 3.003); earlier versions won't work. Moreover, you can't use the Color Efex 3 plug-in if you're in 64-bit mode, you must be in 32-bit mode. As one reader wrote: "I guess the customer gets to pick faster or features." Why not both?
The fact that we don't have coordinated schedules from Nik and Nikon seems to indicate that this relationship isn't exactly solid. Nik says that changes would have to be made to the plug-in capability to get Color Efex 4 to work, and that they've discussed this with Nikon but there's no timeframe on when anything might happen. That's a shame, as the promise of plug-ins never really materialized in Capture NX2 other than Color Efex Pro, and now even that is broken.
Mac users can switch Capture NX2 to 32-bit/64-bit mode by using Get Info and changing the way it operates there.
Windows users must install the new Capture NX2 as a 32-bit application if they want to use Color Efex 3.
All this is not optimal, of course, but at least you can make the new Capture NX2 work with Color Efex 3, albeit with awkward workflow (Thom repeats for the 4,237,915th time: the camera makers need to get real about workflow--disruptions there cause us more grief than anything else).
I also have reports that infrared-converted NEFs are not showing up in the new version.
Which opens up another repeated complaint: when the Capture NX2 user finds that a new bug makes them want to revert to their previously more stable version, guess what? Yep, they end up using one of their Product Key credits to do so. Talk about double jeopardy for the user.