Thanks for the response. The monitor works, but when I run Spectra View II at the end of calibration. I get a message saying the profile was not saved. However, it does indicate that my monitor has been calibrated? Nec sent me this:
Due to issues with the new Mac OS 10.8 (Mountain Lion) and the recent update
to Mac OS 10.7.5, SpectraView II is not able to communicate with the displays
on some systems with Nvidia and Intel based video chipsets when connected to
the DVI inputs on a display. This includes both Thunderbolt (miniDisplayPort)
video outputs when using a miniDisplayPort to DVI cable, and DVI to DVI
connections. This impacts all MultiSync 80 series, MultiSync 90 series, and
the MultiSync P221W models. NEC is currently working with Apple to resolve
this issue, which is expected to be fixed in future updates to Mac OS.
The NEC MultiSync PA series and newer MultiSync P series models can utilize a
USB connection to the display if necessary.