Actually, I'm having the same problem with NeatImage and NIK:
Under the Filters menu>Plugins>NeatImage> Reduce Noise v8, as it should be, but "Reduce Noise v8" is pale and doesn't work.
I have the same problem with NIK plugins; it gets right to the end and shows all the filters but they're all pale and don't work.
I've uninstalled and reinstalled NIK and NI with the same result. By the way, I installed these one at a time, not both together. When the first one didn't work I started over with the other one.
I'm using a Dell desktop with an i7 cpu and 16Gb of RAM and Windows 10. Everything seems to work pretty well except for installing the plugins. Actually, when I first installed the AP trial I installed NIK and it worked but I somehow screwed it up trying to get other plugins to work and so I had to take them all out and start over. The fact is, getting plugins to work is the only problem I've had; I've been trying to get them to work on this machine for several days with no luck.
IF IT MATTERS... I have Photoshop CS2 and PSElements 9 installed and they're both 32-bit programs (as far as I know) but I have both the 32 and 64-bit versions of NeatImage.