Tested some other plugins – PTLens Correction by PaperPress, causes the program to shut down without an error message. Same applies to DxO ViewPoint2 and FilmPack. Anthropics Tech Portrait Professional works.
A few follow ups about NIK software; Yes, it does work, with a few caveats. You lose the Brush features with Viveza and Define. You also can’t ‘save recipes’ with ColorEfex Pro 4. Also, with Viveza 2, the colors of your image in the ‘preview’ window won’t look correct on the entire, unless you zoom to at least 33%, but are correct in the ‘thumbnail’ window.
There are known ‘glitches’ when NIK is used with other ‘non-Adobe’ photo editors.