Hi, I'm Pete. Welcome to JustAnswer! I'm reviewing your question now, and will post back with your reply ASAP.
What operating system does your computer use?
What version of ViewNX2 are you using?
Try downloading the latest version Ver. 2.10.3 from the Nikon website and let me know if it works ok:
Have you tried using any other editing software?
Would you like remote assistance with this?