Hi Suecadi,
This issue may occur due to conflict by other programs that are installed on the computer; I would suggest you to enable clean boot and then test to see if ViewNX program works fine.
Step 1: Put the computer in clean boot and then test
Follow Step 1 in the link below,
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
http://support.microsoft.com/kb/929135
If everything works fine after a clean boot, you can infer that some third party services are causing the problem.
Proceed with the remaining steps to pin-point out the third party service.
After you figure out the problem causing program, you may have to update or install a higher version of the program, if you seldom use that software you can consider uninstalling it.
Important: - Remember to put the computer back to normal startup follow step 7 in the link.
Thanks and Regards:
Ajay K
Microsoft Answers Support Engineer
Visit our Microsoft Answers Feedback Forum and let us know what you think.