I found the issue and the solution to the issue here:
http://answers.microsoft.com/en-us/windows/forum/windows_7-files/problems-with-file-association-in-windows-7-64-bit/8a8
4fcec-22df-4942-8e35-d98dbe96e327
POV-Ray 3.7 wasn't registered correctly. The registry key discussed in the
article was associated with POV 3.62 instead of 3.7.
Mike